What is an Anti-Virus and what does it do?

Antivirus software is a program that detects, prevents and takes action disarm or remove malicious software program such as viruses and worm.

Computer viruses are software programs that are deliberately designed to interfere with computer operation.

· Main benefit is to prevent virus damaging your pc

· Protects PC or network form other forms of malware e.g. Trojans, warms

· Protects valuable information on your Pc and prevents other people outside accessing your information.

· Prevents the time consuming and unnecessary task of having to cleaning or remove, viruses after the damages have been done.

The Disadvantage of an Anti-virus:

· Some anti-virus virus packages can slow down your computer speed

· Antivirus software can require a great deal of disk and memory.

· Anti-virus check must be run regularly

To keep your antivirus active then you need to keep updating your anti-virus because Virus keep changing themselves and when you update the anti-virus then it can execute them.

The most common anti-viruses are Kaspersky, Norton and AVG