1. COMPUTER VIRUS
JANGIDML@REDIFF.COM
1 COMPUTER VIRUS / JANGIDML

2. VIRUS
 VIRUS IS A SOFTWARE, CONTAINS SET OF
PROGRAMMES WHICH LEAD FORCED TO
WORK WITHOUT ANY COMMANDS &
INTERUPTION. THE COMPUTER VIRUS ARE
EXECUTABLE PROGRAMMES.
2 COMPUTER VIRUS / JANGIDML

3. EFFECTS : MAY BE ONE OR
MORE
 DATA : CORRUPT
 SOFTWARES : CORRUPT
 OPERATING SYSTEM : CORRUPT
 HARD DISK : CREATE BAD SECTORE OR
CORRUPT
 SLOW DOWN : PROGRAMMES
 PRINT : UN-USAL CHARACTERS
 HANG : PC OPERATIONS
3 COMPUTER VIRUS / JANGIDML

4. TYPES OF VIRUS
 PROGRAM VIRUS : .COM,.EXE,.DLL etc.
 BOOT VIRUS : INTERUPT BOOTING PROCESS
 MACRO VIRUS : EXECUTE SEQUENCE OF KEY
STROCKS
 STEALTH VIRUS : HIDE FROM ANTI-VIRUS
 POLY MORPHIC VIRUS : INFECT PROGRAMMES
 MULTIPARTITE VIRUS : BOOT & PROGRAMMES
 COMPANION VIRUS : INFECT PROGRAMMES WITH
.COM
 MALICIOUS PROGRAMS : INFECT PROGRAMS OF
4 DOWNLOAD / JANGIDML
COMPUTER VIRUS

5. TIPS TO MINIMIZE VIRUS
RISKS
 AUTOMATIC PROTECTION BY ANTI-VIRUS
 SCAN : HARD DICK
 SCAN : FD,CD,USB DRIVE
 E-MAIL : SCAN & READ
 UPDATE : ANTI-VIRUS
 DOWNLOAD : CARE & SCAN
 AVOID COPIED SOFTWARES
 AVOID TO USE BORROWED CD,USB DRIVE
ETC
 USE BACKUP & RESCUE DISK
5 COMPUTER VIRUS / JANGIDML

6. POPULAR & DESTRUCTIVE
VIRUS
 Creeper,1971  Stuxnet ,2009
 Elk Cloner ,1982  Conficker Virus,2009
 The Morris  agent.btz ,2008
Worm,1988  Zeus ,2007
 ILOVEYOU,2004
 PoisonIvy ,2005
 Code Red,2001
 MyDoom ,2004
 Nimda,2001
 Fizzer ,2003
 Slammer,2003
 Backdoor.Bot
 Blaster
 Funlove
 Welchia
 Stration@mm
 Commwarrior-A,2005
6 COMPUTER VIRUS / JANGIDML