4. Virus Protection Software – protects computer data from malicious virus attacks.

A computer virus – a small program designed to run automatically without user's awareness, and to reproduce itself in as many systems as possible.  In the vast majority of cases, this concealed act of sabotage usually leads to the destruction of some stored information, providing that certain circumstances are met such as a specific date, or a specific number of computer startups.

Reasons to use virus protection software:

• Protect your operating system;

• Protect your applications;

• Protect your data files;

• Scan and find infected files;

• Disinfect or delete infected files.

The virus protection software and virus definitions must be updated regularly.

Internet Resources:

• Antivirus Protection in Internet (article);

• Antivirus Software - current availability and prices;

• Top Antivirus Products from ZDNet Search - reviews, prices, popularity ... lots of info ... great info source;

• Desktop Antivirus: Defend Your PC (article).