Why do I need to use anti-virus software on my computer?

Anti-virus protects your system from malicious code that is embedded in an attachment you download from e-mail, from a web site you visit, or sent directly to you through the network without your taking any action besides turning on your computer. Anti-virus matches file types to known definitions for viruses, and either doesn’t allow the file to be installed, sends it to a quarantine area or deletes it. This helps keep your personal information safe from hackers, keeps your machine from being turned into a “zombie”