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h e virus isidle The
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7199erina
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phat
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2 DOO0319YO
omr assignmPnt
Sec:D
ntvuders amd VITuses
IntYudes
1s to gain atte
he oject of the intrude range off
intease
the
ov to MMDSE
OSE
system System
to a
on
On
S
a y stem
piileages
aCLesi ble
o
SoftwOre
S oftwoe
attatks USe system
intial exeuute
e xeute
o
O US
U se
er to
es that allbws
ul nevabilit i loatk dobY into t h e
t h a t oPtns a
COde
System
three clases of intruders
Thee are whd iS
vidual
der An indi
Masauera CDmputer and
computer an
use
the
nbtauthpriztd
to Controls
acces
oStes
penetrates US e x s eo u n t
atc
who vs Exs
lecgitimate
q
tD exploit USe
uSe Y Whd
Whv
egitlmatte
Mr's fea SovtA P
7PSS
O U
O uMNC
CEES
S
data
progYOm s, 07
OCuess authon
a u t h o i ??ed
ed
6CCes's not
which 3um
attess
fo authdusiPd
fox Suth
whb S
OT her Pr ivileq es
Privileg .
miSv8 s his or
but individual who
use An
clancdestine
Contyo D¥ the syitem
Seizes Supe visDTy
Setes
e v a de audittng
CDntrol to
nd vses -thi's 8uppres
audiE
Ond a c t e CDntyo1S DY tbD
, vivuses
A viYus S a piece of softwaYe that can infect
othex prog%ams by mpdi them 1 h
fy ing
of the viTU
mbditicati bm ndludes a copy
then Con g D t t inpett othex
program, whtn
Dg ams
During its uPetime
a typical Visus goes thxduh
followtng t steps
h e virus isidle The
Dominantphau e
by So m e
beactvated
vTuS wl eventually DE
as a datt) the presenLe
evene) Such
0r Le , o r t h e capaity
anpthex, progam
Some i m i t
exceedig
O t h e di's k p l a l eEs
A a
Onn
the virus plat
Y o p o 9 t o n phose
itseif intd o t h e r p o g a m s
oP
identioal (opy the dSK.
h e dSk.
aeas dn t
Certau'n &Yttm
bS nto
Soncti
S activvate
attdd
phase The viruus
7199erina
functon Yor h i c h it
the
to per PoT m
wos intended s pesfonmed
pesformed
The functt pnn is
ExeCutton
phat
hasumles
0P damaging
Df damagig
funttten may be
1he
