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tyle:
normal;mso-bidi-font-style:italic'>La sicurezza</span></a><span
style=3D'font-family:"Garamond","serif";font-style:normal;mso-bidi-font-sty=
le:
italic'><o:p></o:p></span></h2>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Quando si parla di sicurezza riferita all&#8217;=
uso
di strumenti e tecnologie innovative, il discorso si fa terribilmente serio=
 ed
impegnativo.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Chiunque utilizza un utensile, sa perfettamente =
che
&egrave; esposto a rischi a causa del suo cattivo uso o di atteggiamento di
superficialit&agrave;. Un comportamento che quotidianamente percorriamo da =
anni
nella manualit&agrave; delle nostre funzioni, potrebbe d&#8217;improvviso
manifestarsi come una minaccia per la nostra salute o quella dei nostri
collaboratori.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Ma quando si parla di sicurezza non si deve pens=
are
soltanto ad avvenimenti riconducibili ad incidenti o ad offese cruente al
nostro corpo. Esistono pericoli altrettanto pericolosi: stress, mobbing,
minacce psicologiche, e&#8230; Internet. <o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Quella di utilizzare Internet come valido strume=
nto
alternativo per i principali meccanismi di comunicazione e diffusione delle
informazioni<span style=3D'mso-spacerun:yes'>&nbsp; </span>&egrave; ormai u=
na
realt&agrave; resa disponibile dalla disponibilit&agrave;, dall&#8217;affid=
abilit&agrave;
e dalla diffusione delle tecnologie,. Ormai le notizie si leggono in rete, =
ne
sanno qualcosa le redazioni dei quotidiani che hanno dovuto rivoluzionare la
loro catena di produzione, oppure le agenzie di pubblicit&agrave; che hanno
dovuto sostituire il cartellone pubblicitario della strada con il banner<a
style=3D'mso-footnote-id:ftn1' href=3D"#_ftn1" name=3D"_ftnref1" title=3D""=
><span
class=3DMsoFootnoteReference><span style=3D'mso-special-character:footnote'=
><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:11.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA;
mso-bidi-font-weight:bold'>[1]</span></span><![endif]></span></span></a> di=
 una
pagina web. <o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Internet &egrave; sempre pi&ugrave; presente nel=
le
nostre attivit&agrave;, all&#8217;interno della sede di lavoro, nelle nostre
case e nei luoghi di interesse pubblico (aeroporti, musei, alberghi, parchi
pubblici,&#8230;) e viene quotidianamente utilizzato come supporto per
moltissime attivit&agrave; di gestione e di monitoraggio della sicurezza dei
sistemi e delle infrastrutture.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Il fenomeno &egrave; talmente invasivo da
rappresentare uno dei principali motivi di cambiamento delle abitudini quot=
idiane
di intere comunit&agrave;.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Internet, nella sua accezione pi&ugrave; ampia c=
he
implica anche l&#8217;infrastruttura hardware e software coinvolta (reti, P=
C,
provider<a style=3D'mso-footnote-id:ftn2' href=3D"#_ftn2" name=3D"_ftnref2"=
 title=3D""><span
class=3DMsoFootnoteReference><span style=3D'mso-special-character:footnote'=
><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:11.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA;
mso-bidi-font-weight:bold'>[2]</span></span><![endif]></span></span></a>,
ecc&#8230;), permette di individuare delle categorie di servizi che si
contraddistinguono in base alle loro regole di funzionamento, ormai divenute
standard internazionali. Ognuna di queste, potenzialmente nasconde delle
minacce e sicuramente necessit&agrave; di nostri interventi di sicurezza al
fine di minimizzarne le conseguenze. Tra queste, le pi&ugrave; significativ=
e sono:<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><o:p>&nbsp;</o:p></span></p>

<ul style=3D'margin-top:0cm' type=3Ddisc>
 <li class=3DMsoNormal style=3D'text-align:justify;mso-list:l2 level1 lfo2;
     tab-stops:list 36.0pt'><span style=3D'font-size:11.0pt;font-family:"Ga=
ramond","serif"'>la
     navigazione del Worl Wide Web resa possibile da un software installato=
 sul
     nostro PC di nome Web Browser che consente la visualizzazione di siti =
web
     e la navigazione ipertestuale attraverso l&#8217;utilizzo di protocoll=
i e
     strumenti dedicati;<o:p></o:p></span></li>
 <li class=3DMsoNormal style=3D'text-align:justify;mso-list:l2 level1 lfo2;
     tab-stops:list 36.0pt'><span style=3D'font-size:11.0pt;font-family:"Ga=
ramond","serif"'>la
     posta elettronica</span><!--[if supportFields]><span style=3D'font-siz=
e:
     11.0pt;font-family:"Garamond","serif"'><span style=3D'mso-element:fiel=
d-begin'></span></span>
     XE &quot;<span style=3D'font-size:11.0pt;font-family:"Garamond","serif=
";
     mso-bidi-font-weight:bold'>posta elettronica</span>&quot; <![endif]-->=
<!--[if supportFields]><span
     style=3D'font-size:11.0pt;font-family:"Garamond","serif"'><span
     style=3D'mso-element:field-end'></span></span><![endif]--><span
     style=3D'font-size:11.0pt;font-family:"Garamond","serif"'><span
     style=3D'mso-spacerun:yes'>&nbsp;</span>attraverso la quale &egrave;
     possibile scambiarsi messaggi e comunicazioni alle quali &egrave;
     possibile allegare qualsiasi tipo di documento digitale (anche file
     multimediali, come musica e video);<o:p></o:p></span></li>
 <li class=3DMsoNormal style=3D'text-align:justify;mso-list:l2 level1 lfo2;
     tab-stops:list 36.0pt'><span style=3D'font-size:11.0pt;font-family:"Ga=
ramond","serif"'>le
     comunit&agrave; virtuali che sono aree di discussione tematiche in cui=
 gli
     utenti condividono lo stesso interesse o discutono di uno stesso argom=
ento
     per es. chat room, forum tematici, blog;<o:p></o:p></span></li>
 <li class=3DMsoNormal style=3D'text-align:justify;mso-list:l2 level1 lfo2;
     tab-stops:list 36.0pt'><span style=3D'font-size:11.0pt;font-family:"Ga=
ramond","serif"'>la
     condivisione dei file ovvero il peer to peer che permette di accedere a
     documenti digitali condivisi, anche di natura multimediale;<o:p></o:p>=
</span></li>
 <li class=3DMsoNormal style=3D'text-align:justify;mso-list:l2 level1 lfo2;
     tab-stops:list 36.0pt'><span style=3D'font-size:11.0pt;font-family:"Ga=
ramond","serif"'>il
     commercio elettronico inteso come insieme di transazioni commerciali f=
ra
     produttore e consumatore realizzate con l&#8217;utilizzo del computer e
     reti telematiche e finalizzate allo scambio di informazioni direttamen=
te
     correlate alla vendita di beni e servizi.<o:p></o:p></span></li>
</ul>

<p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-size:=
11.0pt;
font-family:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>L&#8217;intervento di sicurezza da adottare non
&egrave; di tipo standard, n&eacute; unico per tutti. Sicuramente deve esse=
re
commisurato al tipo di danno che ne deriverebbe, per cui una eventuale perd=
ita
di dati che per noi potrebbe essere poco importante, potrebbe essere invece
vitale per il lavoro del vicino della porta accanto.<o:p></o:p></span></p>

<h3><a name=3D"_Toc202718206">La navigazione Web</a></h3>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Come affrontare il problema sicurezza in un campo
tanto eterogeneo e vasto come quello della navigazione web?<o:p></o:p></spa=
n></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Qui le comunicazioni hanno la caratteristica di
poter essere evase ad orario continuato: sette giorni la settimana,
ventiquattro ore al giorno. Attraverso il web &egrave; possibile informare,
vedere, ascoltare, leggere e proporre la propria offerta di mercato. Ma pro=
prio
perch&eacute; la finestra &egrave; aperta, pu&ograve; entrare di tutto e ci=
 si
possono affacciare tutti, senza alcuna balaustra di protezione. <o:p></o:p>=
</span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Cerchiamo quindi di procedere per gradi, andando=
 a
scoprire quali sono i pericoli e dove si potrebbero annidare<a
style=3D'mso-footnote-id:ftn3' href=3D"#_ftn3" name=3D"_ftnref3" title=3D""=
><span
class=3DMsoFootnoteReference><span style=3D'mso-special-character:footnote'=
><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:11.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA;
mso-bidi-font-weight:bold'>[3]</span></span><![endif]></span></span></a>. <=
o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>A seguito di numerosi studi ed indagini effettua=
ti
nel settore, ove spicca la relazione annuale della Trend Micro<a
style=3D'mso-footnote-id:ftn4' href=3D"#_ftn4" name=3D"_ftnref4" title=3D""=
><span
class=3DMsoFootnoteReference><span style=3D'mso-special-character:footnote'=
><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:11.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA;
mso-bidi-font-weight:bold'>[4]</span></span><![endif]></span></span></a>,
emerge che il fenomeno non &egrave; fermo, anzi cambia, in maniera
significativa, di anno in anno, alcune volte molto pi&ugrave; frequentement=
e,
per cui una soluzione adottata deve essere costantemente aggiornata, oppure
addirittura sostituita, con una pi&ugrave; idonea. Attualmente i criminali =
del
web preferiscono rivolgere le loro attenzioni a:<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><o:p>&nbsp;</o:p></span></p>

<ul style=3D'margin-top:0cm' type=3Ddisc>
 <li class=3DMsoNormal style=3D'text-align:justify;mso-list:l2 level1 lfo2;
     tab-stops:list 36.0pt'><span style=3D'font-size:11.0pt;font-family:"Ga=
ramond","serif"'>strumenti
     tradizionalmente utilizzati per migliorare l&#8217;esperienza online d=
egli
     utenti, quindi corsi on-line oppure oggetti che l&#8217;utente deve
     accedere pi&ugrave; che per necessit&agrave; che per curiosit&agrave;,=
<o:p></o:p></span></li>
 <li class=3DMsoNormal style=3D'text-align:justify;mso-list:l2 level1 lfo2;
     tab-stops:list 36.0pt'><span style=3D'font-size:11.0pt;font-family:"Ga=
ramond","serif"'>tradizionali
     minacce trasmesse attraverso forme di virus informatici. Software mali=
gno
     che, dopo aver infettato il sistema, invia i dati sensibili all&#8217;=
esterno
     del perimetro di sicurezza aziendale,<o:p></o:p></span></li>
 <li class=3DMsoNormal style=3D'text-align:justify;mso-list:l2 level1 lfo2;
     tab-stops:list 36.0pt'><span style=3D'font-size:11.0pt;font-family:"Ga=
ramond","serif"'>codice
     che abbandona i tradizionali cicli di vita produttivi in favore di ris=
poste
     che ritornano dal pubblico e altre forme di auto-pubblicazione.<o:p></=
o:p></span></li>
</ul>

<p class=3DMsoNormal style=3D'background:white'><span style=3D'font-size:12=
.5pt;
color:#40458C'><o:p>&nbsp;</o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Adesso due sono i casi possibili: o siamo noi a
cercare informazioni, oppure siamo noi a fornire dei servizi in rete <o:p><=
/o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Nel primo caso dobbiamo premunirci adottando
soluzioni, ormai ampliamente diffuse sul mercato, in grado di rilevare
possibili attacchi sferrati attraverso l&#8217;uso di virus. <o:p></o:p></s=
pan></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Ma questo non deve tranquillizzarci, infatti i v=
irus
non sono l&#8217;unica tipologia di attacco possibile. Esistono, per esempi=
o,
gli spyware</span><!--[if supportFields]><span style=3D'font-size:11.0pt;
font-family:"Garamond","serif";color:windowtext;mso-bidi-font-weight:bold'>=
<span
style=3D'mso-element:field-begin'></span></span> XE &quot;<span style=3D'fo=
nt-size:
11.0pt;font-family:"Garamond","serif";color:windowtext;mso-bidi-font-weight:
bold'>spyware</span>&quot; <![endif]--><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-spacerun:yes'>&nbsp;</span>o
programmi spia. Questo software non agisce immediatamente, ma si annida sul
nostro PC e trasferisce, a nostra insaputa, informazioni ad altre persone c=
he a
questo punto sapranno tutto sulle nostre abitudini e comportamenti. Per
esempio, la stessa Microsoft, per combattere il fenomeno della pirateria
informatica, installa sui nostri PC dei<span style=3D'mso-spacerun:yes'>&nb=
sp;
</span>piccoli programmi in grado di rilevare il numero della licenza. <o:p=
></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Ecco cosa succede: spesso ci capita essere
incuriositi, mentre navighiamo, da un certo programma e allettati dal fatto=
 che
sia gratis decidiamo di scaricarlo sul nostro computer. La frittata &egrave;
fatta: da quel momento il produttore di quel software ha inserito nel nostro
computer un codice in grado di raccogliere informazioni personali, come l&#=
8217;indirizzo
e-mail, i nostri siti preferiti, i pagamenti effettuati con carte di credit=
o.
Tutto questo, nella migliore delle ipotesi viene venduto a societ&agrave; p=
er
le quali questo tipo di informazioni sono una preziosissima risorsa per fare
pubblicit&agrave; mirata, o per capire i gusti e le tendenze degli utenti al
fine di pensare prodotti studiati ad hoc. Questo significa che potremmo ess=
ere
anche noi dei potenziali produttori di spyware per migliorare il nostro tar=
get
di mercato o la filiera di produzione. Ebbene, tutto questo non &egrave; et=
ico,
&egrave; come se fossimo dei guardoni che violano l&#8217;intimit&agrave; d=
elle
persone.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Come proteggersi? Bastano pochi accorgimenti. Il
primo consiste nel<span style=3D'mso-spacerun:yes'>&nbsp; </span>leggere se=
mpre
tutte le clausole di accettazione dei programmi che scarichiamo. Infatti,
queste devono essere riportate, per legge, ma siamo proprio noi, la maggior
parte delle volte, a dare il consenso all&#8217;installazione degli spyware=
</span><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-begin'></span> =
XE
&quot;spyware&quot; </span><![endif]--><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>. Magari distratti, non leggiamo fino in fondo le
informazioni sulla licenza del software, dove, in genere, &egrave; indicato=
 a
caratteri piccolissimi l&#8217;esistenza del codice che verr&agrave; instal=
lato
sul nostro computer. Come eliminare gli spyware gi&agrave; presenti sul nos=
tro
computer?<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>In rete sono disponibili dei programmi gratuiti<a
style=3D'mso-footnote-id:ftn5' href=3D"#_ftn5" name=3D"_ftnref5" title=3D""=
><span
class=3DMsoFootnoteReference><span style=3D'mso-special-character:footnote'=
><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:11.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA;
mso-bidi-font-weight:bold'>[5]</span></span><![endif]></span></span></a> e
sicuri che fanno una scansione completa del nostro disco rigido e del siste=
ma
operativo individuando tutti gli eventuali programmi spia consentendone
l&#8217;eliminazione. <o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Un&#8217;altra tecnica frequentemente usata &egr=
ave;
quella di collocare un altro PC in mezzo al colloquio tra di noi ed il
fornitore di notizie. &Egrave; un po&#8217; come se mettessimo un centralino
che recepisce le informazioni dalla rete e poi ce le racconta, evitando qui=
ndi
il colloquio diretto. In questo caso si parla di proxy</span><!--[if suppor=
tFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-begin'></span><=
/span>
XE &quot;<span style=3D'font-size:11.0pt;font-family:"Garamond","serif";
color:windowtext;mso-bidi-font-weight:bold'>proxy</span>&quot; <![endif]-->=
<!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-spacerun:yes'>&nbsp;</span>se=
rver e
la sua protezione deve essere, ovviamente, particolarmente attenta.<o:p></o=
:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Se la nostra azienda possiede una rete locale<a
style=3D'mso-footnote-id:ftn6' href=3D"#_ftn6" name=3D"_ftnref6" title=3D""=
><span
class=3DMsoFootnoteReference><span style=3D'mso-special-character:footnote'=
><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:11.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA;
mso-bidi-font-weight:bold'>[6]</span></span><![endif]></span></span></a>, il
primo passo da compiere &egrave; la protezione di questa dal mondo esterno,
ossia da Internet. Per raggiungere quest&#8217;obiettivo, tra le tecniche
pi&ugrave; efficienti, c&#8217;&egrave; quella di utilizzare uno strumento
detto firewall<a style=3D'mso-footnote-id:ftn7' href=3D"#_ftn7" name=3D"_ft=
nref7"
title=3D""><span class=3DMsoFootnoteReference><span style=3D'mso-special-ch=
aracter:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";mso-fareast-font-f=
amily:
"Times New Roman";mso-bidi-font-family:"Times New Roman";mso-ansi-language:
IT;mso-fareast-language:IT;mso-bidi-language:AR-SA;mso-bidi-font-weight:bol=
d'>[7]</span></span><![endif]></span></span></a></span><!--[if supportField=
s]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-begin'></span> =
XE
&quot;firewall&quot; </span><![endif]--><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>. Questo pu&ograve; essere sia software, sia
hardware, ed il suo compito &egrave; quello di filtrare le connessioni e di
lasciare entrare ed uscire soltanto quelle provenienti da computer conosciu=
ti
ed autorizzati a partecipare alla nostra rete</span><a style=3D'mso-footnot=
e-id:
ftn8' href=3D"#_ftn8" name=3D"_ftnref8" title=3D""><span class=3DMsoFootnot=
eReference><span
style=3D'font-family:"Garamond","serif";color:black'><span style=3D'mso-spe=
cial-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:12.0pt;font-family:"Garamond","serif";mso-fareast-font-f=
amily:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:black;
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA'>[8]</=
span></span><![endif]></span></span></span></a><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>. <o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Va fatta un&#8217;altra considerazione che fa
riflettere sulla numerosit&agrave; dei possibili attacchi a cui si &egrave;
esposti: le persone in grado di arrecare danno alle reti di comunicazione
basate sul modello Internet, noto con il termine protocollo TCP/IP</span><a
style=3D'mso-footnote-id:ftn9' href=3D"#_ftn9" name=3D"_ftnref9" title=3D""=
><span
class=3DMsoFootnoteReference><span style=3D'font-family:"Garamond","serif";
color:black'><span style=3D'mso-special-character:footnote'><![if !supportF=
ootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:12.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
color:black;mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:
AR-SA'>[9]</span></span><![endif]></span></span></span></a><span
class=3DMsoFootnoteReference><span style=3D'color:black'>,</span></span><sp=
an
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'> </span><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-begin'></span><=
span
style=3D'mso-spacerun:yes'>&nbsp;</span>XE &quot;TCP/IP&quot; </span><![end=
if]--><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>sono molto pi&ugrave; numerose rispetto a quelle=
 che
erano in grado di farlo sui protocolli precedenti, tutti proprietari e poco
diffusi. Il modello infatti, &egrave; uno standard universalmente riconosci=
uto
e, come tale, rappresenta la bibbia di tutti gli analisti ed i progettisti
della grande Rete, e ha una diffusione pressoch&eacute; totale. Potenzialme=
nte
potrebbero essere tutti nostri nemici.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Le cose si complicano se la rete aziendale perme=
tte
l&#8217;accesso a clienti e fornitori esterni e quindi si configura con i
connotati di una Extranet</span><a style=3D'mso-footnote-id:ftn10' href=3D"=
#_ftn10"
name=3D"_ftnref10" title=3D""><span class=3DMsoFootnoteReference><span
style=3D'font-family:"Garamond","serif";color:black'><span style=3D'mso-spe=
cial-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:12.0pt;font-family:"Garamond","serif";mso-fareast-font-f=
amily:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:black;
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA'>[10]<=
/span></span><![endif]></span></span></span></a><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-begin'></span> =
XE
&quot;</span><span style=3D'font-size:11.0pt;color:windowtext;mso-bidi-font=
-weight:
bold'>Extranet</span><span style=3D'font-size:11.0pt;font-family:"Garamond"=
,"serif";
color:windowtext;mso-bidi-font-weight:bold'>&quot; </span><![endif]--><!--[=
if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>. Infatti, l&#8217;apertura del sistema ad utenti
esterni rende, a tutti gli effetti insufficiente la presenza di un firewall.
Come se non bastasse, questo tipo di tecnologia, non protegge dai possibili
attacchi provenienti dall&#8217;interno. In questi casi, &egrave; necessario
abbinare alle funzionalit&agrave; specifiche del firewall, altri strumenti a
protezione del sistema, quali il controllo degli accessi e del tipo di
autorizzazione agli stessi. &Egrave; bene prevedere programmi specializzati=
</span><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-begin'></span> =
XE
&quot;freeware&quot; </span><![endif]--><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>, il cui scopo &egrave; quello di analizzare il
traffico tra le varie risorse della rete aziendale.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>In ogni caso &egrave; buona norma che le
applicazioni del nostro patrimonio informatico consentano l&#8217;accesso
soltanto a persone autorizzate, quindi che posseggono un certo profilo di
accesso ai dati e fornite almeno di due attributi: <span
style=3D'mso-spacerun:yes'>&nbsp;</span>il nome utente e la password.<o:p><=
/o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>&Egrave; noto che spesso, per comodit&agrave;, le
persone comunicano le loro credenziali informatiche ad amici e conoscenti;
questo metodo d&#8217;autenticazione &egrave; quindi consigliabile per
applicazioni con un livello di riservatezza limitato e dove il numero
d&#8217;utenti &egrave; elevato.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Una maggiore robustezza si ottiene invece, colle=
gando
l&#8217;identit&agrave; informatica della persona a qualche cosa od oggetto=
 che
questi detiene e che noi conosciamo. Si possono per esempio utilizzare
smartcard, badge magnetici, chiavi hardware da inserire in qualche porta de=
l<span
style=3D'mso-spacerun:yes'>&nbsp; </span>PC o dispositivo del computer.
Un&#8217;altra tecnica &egrave; quella basata sulla biometria, che sta
ottenendo risultati molto rilevanti su temi quali il riconoscimento delle
impronte digitali, dell&#8217;iride o del volto. La biometria va per&ograve=
; a
scontrarsi spesso con i diritti alla privacy dell&#8217;individuo, anche se,
ultimamente, si stanno raggiungendo dei risultati tecnici, supportati
dall&#8217;intervento del legislatore, che non prevedono necessariamente ba=
nche
dati di tipo schedario.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>A prescindere dalle specificit&agrave; della
tecnologia che si vuole prendere a riferimento, il principio che &egrave;
all&#8217;origine del funzionamento, &egrave; sempre lo stesso:
l&#8217;identificazione dell&#8217;utente avviene sulla base della presenza
fisica di un oggetto, detto chiave, difficilmente replicabile o cedibile. T=
alvolta,
per proteggersi da furti delle chiavi, l&#8217;identificazione del disposit=
ivo
di sicurezza &egrave; abbinata all&#8217;inserimento di una nuova password o
PIN che ne convalida il cosiddetto riconoscimento. In caso di smarrimento d=
ella
chiave, il malintenzionato che trovandola volesse utilizzarla, ne risulta
impossibilitato perch&eacute; non conosce la password con cui attivarla. <o=
:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Una tale soluzione, seppur efficace, &egrave; po=
co
efficiente, in quanto molto complessa e dispendiosa: in funzione
dell&#8217;oggetto scelto per l&#8217;identificazione, infatti, &egrave;
necessario prevedere un accessorio hardware, dai costi non sempre contenuti,
che serve a riconoscerlo ed interpretarlo, per esempio i lettori di smartca=
rd.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Esistono poi delle soluzioni basate sulla firma
elettronica che garantiscono, con un buon livello di sicurezza, l&#8217;ide=
ntit&agrave;
tra il computer che sta accedendo all&#8217;Intranet ed il suo utilizzatore=
. In
questo caso entrano in gioco anche terze parti, dette trusted part o
certification authority delegate ad assicurare la biunivocit&agrave; tra la
firma elettronica ed il suo possessore tramite il rilascio di un certificato
digitale. <o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Tali soluzioni che al momento trovano riscontro
soprattutto in ambito bancario, sono costose da realizzare e necessitano di=
 una
infrastruttura con specifici apparati come, per esempio, i server dedicati =
all&#8217;autenticazione.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Ma ancora una volta: abbiamo bisogno di una came=
ra
che ha una serratura da chiudere a chiave, o abbiamo bisogno di una cassett=
a di
sicurezza in un caveau di una banca? Qual &egrave; il valore del patrimonio=
 da
proteggere? Quali sono i rischi che si &egrave; in grado di sostenere? Per
rispondere a queste domande torna utile affrontare la sicurezza del proprio
sistema partendo dalla valutazione del danno che si avrebbe in caso di atta=
cco
e dalla conoscenza delle possibili minacce a cui si &egrave; esposti.<o:p><=
/o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Allo scopo, vale la pena fare riferimento alle
seguenti due tabelle. La prima mette in relazione i possibili attacchi a fr=
onte
dei processi implementati per la sicurezza. La seconda, il tipo di rischio a
cui si &egrave; esposti, a fronte delle caratteristiche tecniche del nostro
sistema.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Il risultato &egrave; frutto di una collaborazio=
ne
avuta con l&#8217;Autorit&agrave; per l&#8217;Informatica nella Pubblica
Amministrazione, nell&#8217;ambito di un gruppo di lavoro dedicato allo stu=
dio
di un modello di riferimento per la fornitura di servizi sicuri da erogare
attraverso <st1:PersonName ProductID=3D"LA RETE" w:st=3D"on">la Rete</st1:P=
ersonName>
della Pubblica Amministrazione</span><a style=3D'mso-footnote-id:ftn11'
href=3D"#_ftn11" name=3D"_ftnref11" title=3D""><span class=3DMsoFootnoteRef=
erence><span
style=3D'font-family:"Garamond","serif";color:black'><span style=3D'mso-spe=
cial-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:12.0pt;font-family:"Garamond","serif";mso-fareast-font-f=
amily:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:black;
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA'>[11]<=
/span></span><![endif]></span></span></span></a><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>. Il modello, ovviamente, per la sua natura
pu&ograve; essere applicato anche a realt&agrave; aziendali che non ha i
connotati di una Pubblica Amministrazione.<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-famil=
y:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>

<table class=3DMsoNormalTable border=3D1 cellspacing=3D0 cellpadding=3D0 wi=
dth=3D420
 style=3D'width:315.0pt;margin-left:5.4pt;border-collapse:collapse;border:n=
one;
 mso-border-alt:solid windowtext .5pt;mso-yfti-tbllook:480;mso-padding-alt:
 0cm 5.4pt 0cm 5.4pt;mso-border-insideh:.5pt solid windowtext;mso-border-in=
sidev:
 .5pt solid windowtext'>
 <thead>
  <tr style=3D'mso-yfti-irow:0;mso-yfti-firstrow:yes'>
   <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowte=
xt 1.0pt;
   mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
   <p class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><b
   style=3D'mso-bidi-font-weight:normal'><span style=3D'font-family:"Garamo=
nd","serif"'>Processo<o:p></o:p></span></b></p>
   </td>
   <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border:solid windowt=
ext 1.0pt;
   border-left:none;mso-border-left-alt:solid windowtext .5pt;mso-border-al=
t:
   solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
   <p class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><b
   style=3D'mso-bidi-font-weight:normal'><span style=3D'font-family:"Garamo=
nd","serif"'>Tipo
   di attacco<o:p></o:p></span></b></p>
   </td>
  </tr>
 </thead>
 <tr style=3D'mso-yfti-irow:1'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>1 - Autorizzativo<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>I=
ntrusione
  attraverso impersonificazione</span></b><span style=3D'font-size:10.0pt;
  font-family:"Garamond","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>un intrusore cerca di raggirare il proces=
so
  di autenticazione e di presentarsi al front-office con una falsa
  identit&agrave;. Se l&#8217;attacco riesce, l&#8217;intrusore potr&agrave;
  usufruire di alcuni tipi di informazioni anche senza essere autorizzato. =
Le
  tecniche pi&ugrave; utilizzate vanno dal password guessing sino allo
  sfruttamento di bachi presenti sul sistema operativo dei server. Bachi che
  possono essere presenti nel codice del sistema operativo o che possono es=
sere
  introdotti in fase di configurazione dei servizi<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:2'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>2 - Attuazione<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>I=
ntrusione
  attraverso impersonificazione</span></b><span style=3D'font-size:10.0pt;
  font-family:"Garamond","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Simile al precedente, ma
  l&#8217;autenticazione, anzich&eacute; avvenire tra utente ed azienda,
  avviene tra azienda ed azienda .<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:3'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>3 - Esecuzione<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>A=
buso
  di privilegi</span></b><span style=3D'font-size:10.0pt;font-family:"Garam=
ond","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>va evitato, attraverso un controllo degli
  accessi, che un processo autorizzato ad accedere ad un certo insieme di d=
ati
  possa anche accedere ad altre informazioni per il cui accesso non ha otte=
nuto
  autorizzazioni.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:4'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>4 - Erogazione<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>I=
ntercettazione
  delle informazioni</span></b><span style=3D'font-size:10.0pt;font-family:=
"Garamond","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>vanno implementate tecniche di crittograf=
ia o
  comunque tecniche atte a garantire la riservatezza delle informazioni nei
  riguardi di soggetti non autorizzati a conoscerne il contenuto.<o:p></o:p=
></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:5'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>5 &#8211; Fall back<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>A=
ffidabilit&agrave;
  (autenticit&agrave;) della fonte e integrit&agrave; dell&#8217;informazio=
ne
  trasmessa</span></b><span style=3D'font-size:10.0pt;font-family:"Garamond=
","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>&egrave; necessario assicurarsi che le
  sorgenti da cui provengono le informazioni siano state preventivamente
  autenticate e che l&#8217;informazione trasmessa non sia stata in qualche
  modo manipolata, ma corrisponda esattamente a quella trasmessa dalla font=
e originale.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:6;mso-yfti-lastrow:yes'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>6 - Tracciabilit&agrave;<o:p></o:p></span=
></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>D=
istruzione
  del logging</span></b><span style=3D'font-size:10.0pt;font-family:"Garamo=
nd","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>&egrave; necessario premunirsi
  affinch&eacute; i file dove sono contenuti i dati della tracciabilit&agra=
ve;
  dell&#8217;evento (chi, come e quando) non siano modificati, rimossi o
  compromessi.<o:p></o:p></span></p>
  </td>
 </tr>
</table>

<p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-famil=
y:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoCaption align=3Dcenter style=3D'text-align:center'><a
name=3D"_Toc151744845">Figura </a><!--[if supportFields]><span style=3D'mso=
-bookmark:
_Toc151744845'></span><span style=3D'mso-element:field-begin'></span><span
style=3D'mso-bookmark:_Toc151744845'><span
style=3D'mso-spacerun:yes'>&nbsp;</span>SEQ Figura \* ARABIC <span
style=3D'mso-element:field-separator'></span></span><![endif]--><span
style=3D'mso-bookmark:_Toc151744845'><span style=3D'mso-no-proof:yes'>4</sp=
an></span><!--[if supportFields]><span
style=3D'mso-bookmark:_Toc151744845'></span><span style=3D'mso-element:fiel=
d-end'></span><![endif]--><span
style=3D'mso-bookmark:_Toc151744845'> Processi e tipologie di attacchi</spa=
n><span
style=3D'mso-bookmark:_Toc151744845'></span><span style=3D'font-family:"Gar=
amond","serif"'><o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-famil=
y:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>La seguente tabella pone l&#8217;accento sulla
natura di alcuni rischi, correlati alla sicurezza, dovuti o dipendenti dalla
sua architettura tecnica, dal tipo delle risorse utilizzate ed anche dalle
caratteristiche dei locali che ospitano i computer del nostro sistema.<o:p>=
</o:p></span></p>

<p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-famil=
y:"Garamond","serif"'><span
style=3D'mso-spacerun:yes'>&nbsp;</span><o:p></o:p></span></p>

<table class=3DMsoNormalTable border=3D1 cellspacing=3D0 cellpadding=3D0 wi=
dth=3D420
 style=3D'width:315.0pt;margin-left:5.4pt;border-collapse:collapse;border:n=
one;
 mso-border-alt:solid windowtext .5pt;mso-yfti-tbllook:480;mso-padding-alt:
 0cm 5.4pt 0cm 5.4pt;mso-border-insideh:.5pt solid windowtext;mso-border-in=
sidev:
 .5pt solid windowtext'>
 <thead>
  <tr style=3D'mso-yfti-irow:0;mso-yfti-firstrow:yes'>
   <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowte=
xt 1.0pt;
   mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
   <p class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><b
   style=3D'mso-bidi-font-weight:normal'><span style=3D'font-family:"Garamo=
nd","serif"'>Propriet&agrave;<o:p></o:p></span></b></p>
   </td>
   <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border:solid windowt=
ext 1.0pt;
   border-left:none;mso-border-left-alt:solid windowtext .5pt;mso-border-al=
t:
   solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
   <p class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><b
   style=3D'mso-bidi-font-weight:normal'><span style=3D'font-family:"Garamo=
nd","serif"'>Caratteristica
   e rischio connesso<o:p></o:p></span></b></p>
   </td>
  </tr>
 </thead>
 <tr style=3D'mso-yfti-irow:1'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>1 - Disegno e architettura<o:p></o:p></sp=
an></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>U=
nicit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>&egrave; necessario premunirsi da un atta=
cco
  fisico basato sulla criticit&agrave; di avere un sistema unico, come per
  esempio un sistema dedicato, senza adottare specifiche politiche di acces=
so
  fisico al sistema.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:2'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>S=
ingolarit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>caratteristica dipendente dalla
  criticit&agrave; di avere un sistema molto specifico, come per esempio qu=
ello
  basato su comunicazioni di tipo satellitare. Valutare significativamente
  strumenti e mezzi alternativi.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:3'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>C=
entralizzazione</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>il fatto di avere un unico nodo o un unico
  processo, rende critico e dannoso un eventuale fermo macchina.<o:p></o:p>=
</span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:4'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>S=
eparabilit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>maggiore &egrave; la distribuzione delle
  risorse, maggiore &egrave; l&#8217;esposizione agli attacchi.<o:p></o:p><=
/span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:5'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>O=
mogeneit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>un attacco prodotto con successo su una
  risorsa, pu&ograve; essere facilmente replicato su risorse simili.
  Diversificare ed integrare soluzioni alternative.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:6'>
  <td width=3D103 rowspan=3D2 valign=3Dtop style=3D'width:77.4pt;border:sol=
id windowtext 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>2 - Complesso strutturale<o:p></o:p></spa=
n></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>R=
icettivit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Poca efficienza di componenti strutturali=
 del
  sistema: la robustezza di un intero sistema &egrave; riconducibile a quel=
la
  del componente meno sicuro.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:7'>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>C=
onoscenza</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>in caso di riconducibilit&agrave; a model=
li e
  strutture note, &egrave; relativamente semplice sferrare un attacco.<o:p>=
</o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:8'>
  <td width=3D103 rowspan=3D3 valign=3Dtop style=3D'width:77.4pt;border:sol=
id windowtext 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>3 - Adattabilit&agrave;<o:p></o:p></span>=
</p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>R=
igidit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>In presenza di una configurazione poco
  flessibile, si &egrave; in difficolt&agrave; ad intervenire in maniera
  tempestiva.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:9'>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>F=
lessibilit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>In presenza di una configurazione molto
  flessibile, si &egrave; in difficolt&agrave; ad intercettare in maniera
  tempestiva, il tipo di attacco.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:10'>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>I=
ngenuit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>difficolt&agrave; a riconoscere un attacco
  dal normale funzionamento<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:11'>
  <td width=3D103 rowspan=3D5 valign=3Dtop style=3D'width:77.4pt;border:sol=
id windowtext 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>4<span style=3D'mso-spacerun:yes'>&nbsp;
  </span>Configurazione del sistema<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>L=
imiti
  di capacit&agrave;</span></b><span style=3D'font-size:10.0pt;font-family:=
"Garamond","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Un sistema che lavora in condizioni di
  saturazione o di capacit&agrave; limiti &egrave; vulnerabile soprattutto =
agli
  attacchi di tipo denial of service.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:12'>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>D=
ifficolt&agrave;
  di recovery</span></b><span style=3D'font-size:10.0pt;font-family:"Garamo=
nd","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Criticit&agrave; dovuta ad una inibizione=
 del
  recovery di sistema.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:13'>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>A=
ssenza
  di tracciabilit&agrave;</span></b><span style=3D'font-size:10.0pt;font-fa=
mily:
  "Garamond","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Quest&#8217;assenza favorisce intrusioni =
sia
  di tipo <i style=3D'mso-bidi-font-style:normal'>autenticazione</i>, sia d=
i tipo
  <i style=3D'mso-bidi-font-style:normal'>autorizzativo</i>.<o:p></o:p></sp=
an></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:14'>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>D=
ifficolt&agrave;
  di gestione</span></b><span style=3D'font-size:10.0pt;font-family:"Garamo=
nd","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Numerosi e ripetuti aggiornamenti possono
  nascondere o facilitare potenziali attacchi.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:15'>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>U=
sabilit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>La facilit&agrave; di gestione potrebbe
  favorire l&#8217;uso indiscriminata del sistema da parte di utenti smaliz=
iati
  o malintenzionati. <o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:16'>
  <td width=3D103 rowspan=3D2 valign=3Dtop style=3D'width:77.4pt;border:sol=
id windowtext 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>5 &#8211; Esposizione indiretta del siste=
ma<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>R=
emotizzazione</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>sistema esposto a rischi riconducibili ai
  processi di autenticazione e di autorizzazione.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:17'>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>A=
pertura</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>permettendo il sistema l&#8217;accesso a
  molteplici attori, si aprono le porte ai malintenzionati<o:p></o:p></span=
></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:18'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>6 &#8211; Esposizione diretta del sistema=
<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>A=
ccessibilit&agrave;</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Attacco fisico al sistema e danneggiamento
  delle risorse hardware.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:19'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>D=
ebolezza
  strutturale</span></b><span style=3D'font-size:10.0pt;font-family:"Garamo=
nd","serif"'>:<o:p></o:p></span></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Attacco fisico a delle componenti specifi=
che
  dell&#8217;architettura del sistema, per esempio al sistema di alimentazi=
one
  o della connettivit&agrave;.<o:p></o:p></span></p>
  </td>
 </tr>
 <tr style=3D'mso-yfti-irow:20;mso-yfti-lastrow:yes'>
  <td width=3D103 valign=3Dtop style=3D'width:77.4pt;border:solid windowtex=
t 1.0pt;
  border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:s=
olid windowtext .5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Infrastruttura<o:p></o:p></span></p>
  </td>
  <td width=3D317 valign=3Dtop style=3D'width:237.6pt;border-top:none;borde=
r-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1=
.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid window=
text .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=3DMsoNormal style=3D'text-align:justify'><b style=3D'mso-bidi-fo=
nt-weight:
  normal'><span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>D=
ipendenza</span></b><span
  style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>:<o:p></o:p></s=
pan></p>
  <p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-siz=
e:10.0pt;
  font-family:"Garamond","serif"'>Caratteristica dovuta ad un possibile att=
acco
  fisico alle risorse infrastrutturali, quali locali, impianto di
  condizionamento, ecc&#8230;<o:p></o:p></span></p>
  </td>
 </tr>
</table>

<p class=3DMsoNormal style=3D'text-align:justify'><span style=3D'font-famil=
y:"Garamond","serif"'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoCaption align=3Dcenter style=3D'text-align:center'><a
name=3D"_Toc151744846">Figura </a><!--[if supportFields]><span style=3D'mso=
-bookmark:
_Toc151744846'></span><span style=3D'mso-element:field-begin'></span><span
style=3D'mso-bookmark:_Toc151744846'><span
style=3D'mso-spacerun:yes'>&nbsp;</span>SEQ Figura \* ARABIC <span
style=3D'mso-element:field-separator'></span></span><![endif]--><span
style=3D'mso-bookmark:_Toc151744846'><span style=3D'mso-no-proof:yes'>5</sp=
an></span><!--[if supportFields]><span
style=3D'mso-bookmark:_Toc151744846'></span><span style=3D'mso-element:fiel=
d-end'></span><![endif]--><span
style=3D'mso-bookmark:_Toc151744846'> Rischi connessi alla peculiarit&agrav=
e; del
sistema</span></p>

<p class=3DMsoNormal style=3D'mso-layout-grid-align:none;text-autospace:non=
e'><span
style=3D'font-size:10.0pt;font-family:CenturyGothic;mso-bidi-font-family:Ce=
nturyGothic;
background:yellow;mso-highlight:yellow'><o:p>&nbsp;</o:p></span></p>

<h3><a name=3D"_Toc202718207">Posta Elettronica</a></h3>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Quando nei primissimi anni &#8217;70 il
programmatore Ray Tomlinson cre&ograve; il simbolo <i style=3D'mso-bidi-fon=
t-style:
normal'>@</i>, e realizz&ograve; i programmi <a
href=3D"http://sicurezzacittadino.caspur.it/mod_6/6g_000.html#sndmsg"
title=3D"voce di glossario"><span style=3D'color:windowtext;text-decoration=
:none;
text-underline:none'>SNDMSG</span></a> e <a
href=3D"http://sicurezzacittadino.caspur.it/mod_6/6g_000.html#readmail"
title=3D"voce di glossario"><span style=3D'color:windowtext;text-decoration=
:none;
text-underline:none'>READMAIL</span></a> su computer con sistema operativo
UNIX, mai avrebbe pensato di essere il fondatore di una forma di comunicazi=
one
in grado di sostituire efficacemente, il servizio di posta ordinaria. Se a
questo poi si aggiunge il fatto che non bisogna affrancare le nostre letter=
e e
che il recapito &egrave; molto pi&ugrave; efficiente e rapido di un postino=
 che
lavora ad orario continuato, ventiquattro ore al giorno, allora torna facile
capire i motivi della diffusione e le potenzialit&agrave; di questa forma d=
i comunicazione.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold;mso-bidi-font-style:italic'>Oggi, possedere un
indirizzo di posta elettronica</span><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold;mso-bidi-font-style:italic'><span style=3D'mso-el=
ement:
field-begin'></span></span><span style=3D'font-size:11.0pt;font-family:"Gar=
amond","serif";
color:windowtext;mso-bidi-font-weight:bold'> XE &quot;posta elettronica&quo=
t; </span><![endif]--><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold;mso-bidi-font-style:italic'><span style=3D'mso-el=
ement:
field-end'></span></span><![endif]--><span style=3D'font-size:11.0pt;font-f=
amily:
"Garamond","serif";color:windowtext;mso-bidi-font-weight:bold'><span
style=3D'mso-spacerun:yes'>&nbsp;</span>&egrave; facilissimo: basta effettu=
are
una registrazione gratis ad uno dei numerosi provider di questo servizio. In
verit&agrave; &egrave; talmente facile che parecchie persone hanno pi&ugrav=
e; di
un indirizzo, uno lo usano a livello di posta privata, un altro a livello di
posta aziendale, un altro ancora a fini ludici, ecc&#8230;<o:p></o:p></span=
></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Ogni indirizzo di posta elettronica si traduce i=
n un
riferimento fisico ben preciso dove si &egrave; raggiungibili.<o:p></o:p></=
span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Una delle prime cose da fare &egrave; scegliere =
il
programma attraverso il quale leggere e spedire le mail: il famigerato <i
style=3D'mso-bidi-font-style:normal'>client</i> di posta elettronica. Ne es=
istono
molti sul mercato ed alcuni di essi sono freeware. Il fenomeno &egrave;
talmente diffuso che la stessa Microsoft fornisce gratuitamente Outlook
Express. Per poter configurare correttamente il nostro client di posta dobb=
iamo
sapere almeno due informazioni, da quale ufficio postale virtuale leggere la
posta e in quale buca delle lettere depositare le nostre missive. Senza dil=
ungarci
su i tipi di protocollo di trasmissione utilizzato durante i trasferimenti
della posta elettronica, a noi basti sapere che nel primo caso si parla di
server POP3, nel secondo di server SMTP<a style=3D'mso-footnote-id:ftn12'
href=3D"#_ftn12" name=3D"_ftnref12" title=3D""><span class=3DMsoFootnoteRef=
erence><span
style=3D'mso-special-character:footnote'><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:11.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA;
mso-bidi-font-weight:bold'>[12]</span></span><![endif]></span></span></a>.<=
o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>A questo punto vanno chiariti subito tre punti
fondamentali:<o:p></o:p></span></p>

<p style=3D'margin-top:0cm;margin-right:0cm;margin-bottom:0cm;margin-left:3=
6.0pt;
margin-bottom:.0001pt;text-align:justify;text-indent:-18.0pt;mso-list:l1 le=
vel1 lfo3;
tab-stops:list 36.0pt'><![if !supportLists]><span style=3D'font-size:11.0pt;
font-family:Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family:Symb=
ol;
color:windowtext;mso-bidi-font-weight:bold'><span style=3D'mso-list:Ignore'=
>&middot;<span
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D'font-size:11.0pt;font-family:=
"Garamond","serif";
color:windowtext;mso-bidi-font-weight:bold'>il server SMTP pu&ograve; essere
tranquillamente acceduto senza alcun controllo sulla persona che sta
depositando la posta,<o:p></o:p></span></p>

<p style=3D'margin-top:0cm;margin-right:0cm;margin-bottom:0cm;margin-left:3=
6.0pt;
margin-bottom:.0001pt;text-align:justify;text-indent:-18.0pt;mso-list:l1 le=
vel1 lfo3;
tab-stops:list 36.0pt'><![if !supportLists]><span style=3D'font-size:11.0pt;
font-family:Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family:Symb=
ol;
color:windowtext;mso-bidi-font-weight:bold'><span style=3D'mso-list:Ignore'=
>&middot;<span
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D'font-size:11.0pt;font-family:=
"Garamond","serif";
color:windowtext;mso-bidi-font-weight:bold'>il server POP3, viene acceduto
attraverso il controllo della password assegnata alla persona al momento
dell&#8217;attribuzione dell&#8217;indirizzo e-mail da parte del provider, =
ma
la password viene trasmessa in chiaro sulla rete, anche se a noi il client =
di
posta mostra degli asterischi al momento della sua digitazione!<o:p></o:p><=
/span></p>

<p style=3D'margin-top:0cm;margin-right:0cm;margin-bottom:0cm;margin-left:3=
6.0pt;
margin-bottom:.0001pt;text-align:justify;text-indent:-18.0pt;mso-list:l1 le=
vel1 lfo3;
tab-stops:list 36.0pt'><![if !supportLists]><span style=3D'font-size:11.0pt;
font-family:Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family:Symb=
ol;
color:windowtext;mso-bidi-font-weight:bold'><span style=3D'mso-list:Ignore'=
>&middot;<span
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D'font-size:11.0pt;font-family:=
"Garamond","serif";
color:windowtext;mso-bidi-font-weight:bold'>il messaggio di posta, in arriv=
o o
in spedizione, viaggia in chiaro sulla rete!<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Conclusione? La posta elettronica non &egrave;
sicura. &Egrave; come se consegnassimo le nostre lettere al postino senza la
busta (solo cartoline)!<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Su questi presupposti si basano due delle pi&ugr=
ave;
diffuse forme di frode: lo spamming</span><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-begin'></span><=
/span>
XE &quot;<span style=3D'font-size:11.0pt;font-family:"Garamond","serif";
color:windowtext;mso-bidi-font-weight:bold'>spamming</span>&quot; <![endif]=
--><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-spacerun:yes'>&nbsp;</span>ed=
 il
phising</span><!--[if supportFields]><span style=3D'font-size:11.0pt;font-f=
amily:
"Garamond","serif";color:windowtext;mso-bidi-font-weight:bold'><span
style=3D'mso-element:field-begin'></span></span> XE &quot;<span style=3D'fo=
nt-size:
11.0pt;font-family:"Garamond","serif";color:windowtext;mso-bidi-font-weight:
bold'>phising</span>&quot; <![endif]--><!--[if supportFields]><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><span style=3D'mso-element:field-end'></span></s=
pan><![endif]--><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>. Il primo fenomeno consiste nell&#8217;inviare a
qualcuno una comunicazione che lui non ha mai richiesto (avete per caso
ricevuto negli ultimi periodi mail che vi chiedevano un aiuto su come far
uscire 100.000 dollari dalla Nigeria? Ebbene siete stati oggetto di spammin=
g).
Ovviamente, ai fini di questo trattato che vede in primo piano l&#8217;etic=
a,
vi sconsiglio vivamente di acquistare basi dati di indirizzi di nominativi a
cui trasmettere i vostri messaggi, sia perch&eacute; queste basi dati costa=
no tanti
soldi, sia perch&eacute; sareste perseguibili legalmente.<o:p></o:p></span>=
</p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Il secondo fenomeno consiste nel costruire una
pagina web identica ad una nota al cliente, per esempio la home page della
banca che utilizza per depositare i suoi soldi, e richiedere le credenziali=
 di
accesso: se cadete in questo tranello il vostro conto svanir&agrave;
inspiegabilmente in poche ore. Se invece state pensando di far soldi con qu=
esta
pratica, sappiate che in questo caso la condanna potrebbe essere anche di t=
ipo
penale.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Dando per assodato che mai e poi mai saremo noi =
gli
artefici di frodi informatiche, vediamo invece come possiamo difenderci da
tutti questi postini malvagi.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Regola n. 1: non aprire mai allegati che proveng=
ono
da destinatari sconosciuti. In particolare non aprire mai allegati con nomi
aventi un&#8217;estensione &#8220;.EXE&#8221;, &#8220;.BAT&#8221;, &#8220;.=
JPG&#8221;,
&#8220;.ZIP&#8221;, &#8220;.RAR&#8221;: potrebbero nascondere dei virus
informatici. Prima di aprirli, diamoli in pasto al nostro antivirus, di cui
avremo effettuato diligentemente tutti gli aggiornamenti.<o:p></o:p></span>=
</p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Regola n. 2: leggere sempre il mittente della ma=
il.
Se non lo conosciamo, potremmo anche permetterci la curiosit&agrave; di
leggerla, ma mai dovremo rispondere al mittente. In questo caso, infatti,
sapr&agrave; con certezza che ci ha raggiunto e non ci dar&agrave; pace.<o:=
p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'>Regola n. 3: in caso di invio di posta, potremmo
proteggerla attraverso tecniche di crittografia oppure firmarle digitalment=
e.<o:p></o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><o:p>&nbsp;</o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><o:p>&nbsp;</o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
background:yellow;mso-highlight:yellow;mso-bidi-font-weight:bold'><o:p>&nbs=
p;</o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
background:yellow;mso-highlight:yellow;mso-bidi-font-weight:bold'><o:p>&nbs=
p;</o:p></span></p>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
background:yellow;mso-highlight:yellow;mso-bidi-font-weight:bold'>Adesso che
sappiamo come difenderci &egrave; di fondamentale importanza estendere le
conoscenze acquisite alla nostra organizzazione. Formazione, sensibilizzazi=
one,
pubblicazione attraverso Intranet od altri strumenti di diffusione aziendal=
i,
come per esempio una normale circolare, renderanno sempre pi&ugrave; sicura=
 la nostra
rete aziendale e sempre pi&ugrave; responsabili i nostri collaboratori.</sp=
an><span
style=3D'font-size:11.0pt;font-family:"Garamond","serif";color:windowtext;
mso-bidi-font-weight:bold'><o:p></o:p></span></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div style=3D'mso-element:footnote-list'><![if !supportFootnotes]><br clear=
=3Dall>

<hr align=3Dleft size=3D1 width=3D"33%">

<![endif]>

<div style=3D'mso-element:footnote' id=3Dftn1>

<p class=3DMsoFootnoteText style=3D'text-align:justify'><a style=3D'mso-foo=
tnote-id:
ftn1' href=3D"#_ftnref1" name=3D"_ftn1" title=3D""><span class=3DMsoFootnot=
eReference><span
style=3D'mso-special-character:footnote'><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:10.0pt;font-family:"T=
imes New Roman","serif";
mso-fareast-font-family:"Times New Roman";mso-ansi-language:IT;mso-fareast-=
language:
IT;mso-bidi-language:AR-SA'>[1]</span></span><![endif]></span></span></a> F=
inestra
interattiva, con contenuto pubblitario, che appare insieme alla pagina
richiesta dal visitatore. Consentono di attivare l&#8217;esecuzione di
programmi, comunicazioni commerciali o rimandi ad altri luoghi della rete
(normalmente il sito dell&#8217;azienda che gestisce il servizio/prodotto
pubblicizzato).</p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn2>

<p class=3DMsoFootnoteText><a style=3D'mso-footnote-id:ftn2' href=3D"#_ftnr=
ef2"
name=3D"_ftn2" title=3D""><span class=3DMsoFootnoteReference><span style=3D=
'mso-special-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:10.0pt;font-family:"Times New Roman","serif";mso-fareast=
-font-family:
"Times New Roman";mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-lan=
guage:
AR-SA'>[2]</span></span><![endif]></span></span></a> Organizzazione che off=
re
agli utenti (residenziali o imprese) accesso a Internet con i relativi serv=
izi
(posta elettronica<!--[if supportFields]><span style=3D'mso-element:field-b=
egin'></span>
XE &quot;<span style=3D'font-size:11.0pt;font-family:"Garamond","serif";
mso-bidi-font-weight:bold'>posta elettronica</span>&quot; <![endif]--><!--[=
if supportFields]><span
style=3D'mso-element:field-end'></span><![endif]-->, news, ecc&#8230;).</p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn3>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><a
style=3D'mso-footnote-id:ftn3' href=3D"#_ftnref3" name=3D"_ftn3" title=3D""=
><span
class=3DMsoFootnoteReference><span style=3D'font-size:10.0pt;color:windowte=
xt'><span
style=3D'mso-special-character:footnote'><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:10.0pt;font-family:"T=
imes New Roman","serif";
mso-fareast-font-family:"Times New Roman";mso-ansi-language:IT;mso-fareast-=
language:
IT;mso-bidi-language:AR-SA'>[3]</span></span><![endif]></span></span></span=
></a>
<span style=3D'font-size:10.0pt;color:windowtext'>Perci&ograve; vale il det=
to: <i
style=3D'mso-bidi-font-style:normal'>se conosci il nemico e conosci te stes=
so,
non devi temere il risultato di cento battaglie. Se conosci te stesso ma no=
n il
nemico, per ogni vittoria ottenuta potrai subire anche una sconfitta. Se non
conosci n&egrave; il nemico n&egrave; te stesso, soccomberai in ogni battag=
lia</i>
(Sun Zi Bing Fa).<o:p></o:p></span></p>

<p class=3DMsoFootnoteText><o:p>&nbsp;</o:p></p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn4>

<p class=3DMsoFootnoteText><a style=3D'mso-footnote-id:ftn4' href=3D"#_ftnr=
ef4"
name=3D"_ftn4" title=3D""><span class=3DMsoFootnoteReference><span style=3D=
'mso-special-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:10.0pt;font-family:"Times New Roman","serif";mso-fareast=
-font-family:
"Times New Roman";mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-lan=
guage:
AR-SA'>[4]</span></span><![endif]></span></span></a> <a
href=3D"http://it.trendmicro.com.it/">http://it.trendmicro.com.it</a>, famo=
sa
casa produttrice di software antivirus.</p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn5>

<p class=3DMsoFootnoteText><a style=3D'mso-footnote-id:ftn5' href=3D"#_ftnr=
ef5"
name=3D"_ftn5" title=3D""><span class=3DMsoFootnoteReference><span style=3D=
'mso-special-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:10.0pt;font-family:"Times New Roman","serif";mso-fareast=
-font-family:
"Times New Roman";mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-lan=
guage:
AR-SA'>[5]</span></span><![endif]></span></span></a> Per la rimozione degli
spyware ci sono delle ottime soluzioni&nbsp; come, per esempio, il programma
Ad-aware gratuito e semplicissimo da utilizzare (<a
href=3D"http://www.lavasoft.it/">http://www.lavasoft.it/</a>).</p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn6>

<p class=3DMsoFootnoteText><a style=3D'mso-footnote-id:ftn6' href=3D"#_ftnr=
ef6"
name=3D"_ftn6" title=3D""><span class=3DMsoFootnoteReference><span style=3D=
'mso-special-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:10.0pt;font-family:"Times New Roman","serif";mso-fareast=
-font-family:
"Times New Roman";mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-lan=
guage:
AR-SA'>[6]</span></span><![endif]></span></span></a><span lang=3DEN-GB
style=3D'mso-ansi-language:EN-GB'> In gergo LAN &#8211; Local Area Network.=
<o:p></o:p></span></p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn7>

<p class=3DMsoFootnoteText><a style=3D'mso-footnote-id:ftn7' href=3D"#_ftnr=
ef7"
name=3D"_ftn7" title=3D""><span class=3DMsoFootnoteReference><span style=3D=
'mso-special-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:10.0pt;font-family:"Times New Roman","serif";mso-fareast=
-font-family:
"Times New Roman";mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-lan=
guage:
AR-SA'>[7]</span></span><![endif]></span></span></a> Capitolo Sicurezza, Di=
gito
Ergo Sum, Mario Gentili &#8211; Airone editore.</p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn8>

<p class=3DMsoFootnoteText style=3D'text-align:justify'><a style=3D'mso-foo=
tnote-id:
ftn8' href=3D"#_ftnref8" name=3D"_ftn8" title=3D""><span class=3DMsoFootnot=
eReference><span
style=3D'font-family:"Garamond","serif"'><span style=3D'mso-special-charact=
er:footnote'><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:10.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA'>[8]</=
span></span><![endif]></span></span></span></a><span
style=3D'font-family:"Garamond","serif"'> In Internet, cos&igrave; come in
Intranet, ogni computer ha un numero, detto IP-address che si configura come
una quaterna di tre numeri separati da un punto: nnn.mmm.xxx.yyy. &Egrave; =
un
po&#8217; come ogni apparecchio telefonico, connesso alla Rete, ha il propr=
io
numero identificativo. Il firewall, continuando nel paragone, ha il compito=
 di
filtrare telefonate <i style=3D'mso-bidi-font-style:normal'>particolari</i>=
, come
numeri a linee hard, ecc&#8230;.<o:p></o:p></span></p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn9>

<p style=3D'margin:0cm;margin-bottom:.0001pt;text-align:justify'><a
style=3D'mso-footnote-id:ftn9' href=3D"#_ftnref9" name=3D"_ftn9" title=3D""=
><span
class=3DMsoFootnoteReference><span style=3D'font-size:10.0pt;font-family:"G=
aramond","serif";
color:black'><span style=3D'mso-special-character:footnote'><![if !supportF=
ootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:10.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
color:black;mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:
AR-SA'>[9]</span></span><![endif]></span></span></span></a><span
style=3D'font-size:10.0pt;font-family:"Garamond","serif";color:black'> </sp=
an><span
style=3D'font-size:10.0pt;font-family:"Garamond","serif";color:windowtext'>=
Nei
primi anni settanta, <st1:PersonName ProductID=3D"la Defence Advanced" w:st=
=3D"on">la
 Defence Advanced</st1:PersonName> Research Project Agency finanzi&ograve;
l&#8217;Universit&agrave; di Stamford per lo sviluppo di un insieme di
protocolli di comunicazione da utilizzarsi per lo sviluppo di reti a
commutazione di pacchetto, per l&#8217;interconnessione di calcolatori
eterogenei. Fu cos&igrave; che nacque l&#8217;Internet Protocol Suite i cui=
 due
protocolli pi&ugrave; noti sono il TCP, acronimo di Trasmission Control
Protocol<span style=3D'mso-spacerun:yes'>&nbsp; </span>e l&#8217;IP, acroni=
mo di
Internet Protocol. Il TCP/IP, attualmente rappresenta l&#8217;architettura =
standard
adottata dalla Rete Internet e Intranet. <o:p></o:p></span></p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn10>

<p class=3DMsoNormal style=3D'text-align:justify'><a style=3D'mso-footnote-=
id:ftn10'
href=3D"#_ftnref10" name=3D"_ftn10" title=3D""><span class=3DMsoFootnoteRef=
erence><span
style=3D'font-size:10.0pt;font-family:"Garamond","serif"'><span style=3D'ms=
o-special-character:
footnote'><![if !supportFootnotes]><span class=3DMsoFootnoteReference><span
style=3D'font-size:10.0pt;font-family:"Garamond","serif";mso-fareast-font-f=
amily:
"Times New Roman";mso-bidi-font-family:"Times New Roman";mso-ansi-language:
IT;mso-fareast-language:IT;mso-bidi-language:AR-SA'>[10]</span></span><![en=
dif]></span></span></span></a>
<span style=3D'font-size:10.0pt;font-family:"Garamond","serif"'>Un&#8217;Ex=
tranet
&egrave; parte di un&#8217;Intranet di una societ&agrave;, estesa per&ograv=
e;
ad utenti, selezionati ed esterni alla stessa. I teorici la definiscono anc=
he come
uno stato mentale nel quale Internet &egrave; percepito come una via per co=
llaborare
con altre societ&agrave; dello stesso gruppo o con fornitori autorizzati
dell&#8217;azienda.<o:p></o:p></span></p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn11>

<p class=3DMsoNormal style=3D'text-align:justify;mso-layout-grid-align:none;
text-autospace:none'><a style=3D'mso-footnote-id:ftn11' href=3D"#_ftnref11"
name=3D"_ftn11" title=3D""><span class=3DMsoFootnoteReference><span style=
=3D'font-size:
10.0pt;font-family:"Garamond","serif"'><span style=3D'mso-special-character=
:footnote'><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:10.0pt;font-family:"G=
aramond","serif";
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New R=
oman";
mso-ansi-language:IT;mso-fareast-language:IT;mso-bidi-language:AR-SA'>[11]<=
/span></span><![endif]></span></span></span></a><span
style=3D'font-size:10.0pt;font-family:"Garamond","serif"'> AIPA &#8211; Gru=
ppo di
lavoro Sicurezza dei servizi in Rete &#8211; marzo 2003 - <i>Modello di ero=
gazione
di servizi sicuri di cooperazione su Rete per le PP.AA</i>.<o:p></o:p></spa=
n></p>

<p class=3DMsoFootnoteText><o:p>&nbsp;</o:p></p>

</div>

<div style=3D'mso-element:footnote' id=3Dftn12>

<p class=3DMsoFootnoteText style=3D'text-align:justify'><a style=3D'mso-foo=
tnote-id:
ftn12' href=3D"#_ftnref12" name=3D"_ftn12" title=3D""><span
class=3DMsoFootnoteReference><span style=3D'mso-special-character:footnote'=
><![if !supportFootnotes]><span
class=3DMsoFootnoteReference><span style=3D'font-size:10.0pt;font-family:"T=
imes New Roman","serif";
mso-fareast-font-family:"Times New Roman";mso-ansi-language:IT;mso-fareast-=
language:
IT;mso-bidi-language:AR-SA'>[12]</span></span><![endif]></span></span></a> =
Purtroppo,
in questo caso, , i nomi sono importanti perch&egrave; tutti i client di po=
sta
elettronica li utilizzano per individuare, a seguito di alcune trascodifiche
tra nome e indirizzo fisico, i computer da dove prelevare la posta o dove
depositarla.</p>

</div>

</div>

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