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BASIC SECURITY ISSUES:COMPUTER
VIRUSES,MALWARE,ETC.ANTI-VIRUS
SOFTWARE
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PREPARED BY :
NAME :VATSAL BHATT
ROLL NO. : 71
ENROLLMENT NO. : 23002170110011
BATCH : D-3
BRANCH : C.E
NAME :ROCHAN SHAH
ROLL NO. : 67
ENROLLMENT NO. : 23002170110170
BATCH : D-3
BRANCH : C.E
NAME :DHRUV PATEL
ROLL NO. : 62
ENROLLMENT NO. : 23002170210079
BATCH : D-3
BRANCH : I.T
NAME :KRISH SANGHANI
ROLL NO. : 81
ENROLLMENT NO. : 23002170110162
BATCH : D-3
BRANCH : C.E
NAME :VIRAJ SHAH
ROLL NO. : 91
ENROLLMENT NO. : 23002170110172
BATCH : D-3
BRANCH : C.E
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• I N T R O D U C T I O N
• W H AT A C O M P U T E R V I R U S D O ?
• T Y P E S O F C O M P U T E R V I R U S
• H O W D O C O M P U T E R V I R U S S P R E A D ?
• W H AT I S A N T I - V I R U S S O F T WA R E ?
• H O W A N A N T I - V I R U S S O F T WA R E W O R K S ?
• H O W T O P R O T E C T Y O U R S Y S T E M A G A I N S T V I R U S ?
Content
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• What is Computer Virus ?
A c omputer virus is a type of malic ious
s oftw ar e , or malw ar e , that s pr eads betw een
c omputer s and c aus es damage to data and
s oftw ar e .
INTRODUCTION
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• A vir us tr ies to tak e c ontr ol of c omputer s ys tem
at the fir s t oppor tunity available.
• Als o it mak es c opies of it s elf and tr y to c ar r y
harmful tas k written in its program.
• This pr oc es s c an happen s o quic k ly that the
us er is not even aw ar e of the pr es enc e of a
vir us in c omputer.
WHAT A COMPUTER VIRUS DO ?
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1 . Boot s ec tor vir u s
2 . Web s c r ipting vir us
3 . Br ow s er hijac k er
4 . R es ident vir us
5. Direc t ac tion virus
6 . Polymor phic vir us
7 . File infec tor vir us
8 . Multipar tite vir us
9 . Mac r o vir us
TYPES OF COMPUTER VIRUS
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• Computer virus es us ually s pread in one of three
w ays :
Removable media.
Downloads off the Internet;
E-mail attachments.
HOW DO COMPUTER VIRUS SPREAD ?
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• A n t i v i r u s s o f t wa r e i s a p r o g r a m t h a t a r e d e s i g n e d t o
p r e v e n t , s e a r c h f o r, d e t e c t , a n d r e m o v e s o f t wa r e
v i r u s e s . O n c e i n s t a l l e d , m o s t a n t i v i r u s s o f t wa r e r u n s
a u t o m a t i c a l l y i n t h e b a c k g r o u n d t o p r o v i d e r e a l - t i m e
p r o t e c t i o n a g a i n s t v i r u s a t t a c k s .
• E x a m p l e : N o r t o n , Q u i c k H e a l , AV G e t c .
WHAT IS ANTI-VIRUS SOFTWARE?
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• T h e a n t i v i r u s s o f t wa r e e x a m i n e s e a c h a n d e v e r y f i l e
i n a c o m p u t e r a n d e x a m i n e s i t s c o n t e n t wi t h t h e
v i r u s d e f i n i t i o n s s t o r e d i n i t s v i r u s d i c t i o n a r y.
• A v i r u s d i c t i o n a r y i s a n i n b u i l t f i l e b e l o n g i n g t o a n
a n t i v i r u s s o f t wa r e t h a t c o n t a i n s c o d e i d e n t i f i e d a s a
v i r u s b y t h e a n t i v i r u s a u t h o r s .
HOW AN ANTI-VIRUS SOFTWARE
WORKS?
VIRUS
Found!
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I n s t a l l a g o o d a n t i v i r u s s o f t w a r e o n y o u r s y s t e m .
U p d a t e y o u r a n t i v i r u s r e g u l a r l y.
B e c a r e f u l w h i l e d o w n l o a d i n g f i l e s o r p r o g r a m s f r o m t h e
w e b .
A l w a y s s c a n y o u r r e m o v a b l e d e v i c e s ( C D , P e n d r i v e e t c . ) .
D o n o t u s e p i r a t e d o r c r a c k e d s o f t w a r e .
A l w a y s t u r n o n f i r e w a l l o f y o u r o p e r a t i n g s y s t e m .
HOW TO PROTECT YOUR SYSTEM AGAINST
VIRUS ?
