How Viruses and AntiVirus Work

1. How Viruses Work :

A computer virus is a parasitic program written intentionally to alter the way your computer operates without your permission or knowledge. A virus attaches copies of itself to other files and, when activated, may damage files, cause erratic system behavior, or display messages. Computer viruses infect system files and documents created by programs with macro capabilities. Some system viruses are programmed specifically to corrupt programs, delete files, or erase your disk.

2. How AntiVirus Works :

AntiVirus monitors your computer for known and unknown viruses. A known virus is one that can be detected and identified by name. An unknown virus is one for which AntiVirus does not yet have a definition.

AntiVirus protects your computer from both types of viruses, using virus definitions to detect known viruses, and Bloodhound technology and Script Blocking to detect unknown viruses. Virus definitions, Bloodhound technology, and Script Blocking are all used during scheduled scans and manual scans, and are used by Auto-Protect to constantly monitor your computer.