COMPUTER VIRUSES AND ANTIVIRUSES : AN INSIGHT


  COMPUTER VIRUSES AND ANTIVIRUSES .pptx (Size: 589.56 KB / Downloads: 1)


TYPES OF INFECTANTS:


VIRUSES: Small piece of software that piggybacks on real programs
WORMS: Computer program that copies itself from machine to machine
E-MAIL VIRUSES :Moves around in e-mail messages
TROJAN HORSES: Claims to do one thing, but does something else


VIRUS: WORKING PHASES

INFECTION PHASE: The file is infected
ATTACK PHASE: The infected file is run, and virus shows its action


VIRUSES: WHAT THEY INFECT

System Sector Viruses OS boot sector or the Master Boot Record
File Viruses rogram (COM and EXE) files
Macro Viruses ata files having macro programs
Companion Viruses : EXE files by installing a same-named COM file
Cluster Viruses :Changes the DOS directory information so that directory entries point to the virus code instead of the actual program
Batch File Viruses : batch files
Source Code Viruses : Source code, by adding Trojan code to it
Visual Basic Worms : Visual Basic Scripts


VIRUSES AND THE INTERNET

Comparatively small role in the spread of viruses
Only when someone mails an infected document to someone else OR makes one available on web site
Anonymous posting
Huge role in future


ANTI- VIRUS RESEARCH


IBM has been preparing a defense against fast spreading viruses
Built the first commercial-grade immune system
Can find, analyze and cure previously unknown viruses
Analysis center can analyze most viruses automatically
Greater speed and precision than human analysts can
Runs the viruses in a virtual environment

End-to-end security of the system allows the safe
submission of virus samples and ensures
authentication of new virus definitions.


CONCLUSION


VIRUSES HAVE STIMULATED SCIENTIFIC THINKING AND IDEAS
SOME IDEAS CAN ALSO BE EXPORTED INTO MEDICAL SCIENCE
SCOPE FOR FURTHER IMPROVEMENT AND RESEARCH
VIRUSES CAN ALSO BE PUT TO CONSTRUCTIVE USE(GOOD VIRUSES)
EACH USER MUST REALIZE THE GRAVE DANGER POSED BY VIRUSES
TAKE STEPS TO PREVENT INFECTION, AND IN CASE OF INFECTION, PROPER AND SAFE WAYS OF DEALING WITH THE INFECTION