Anti-Virus Software consists of computer programs that attempt to identify, thwart and eliminate computer viruses and other malicious software (malware). Anti-virus software typically uses two different techniques to accomplish this:

1. Examining (scanning) files to look for known viruses matching definitions in a virus dictionary.

2. Identifying suspicious behavior from any computer program which might indicate infection.

Now that you know the jist of how these programs work, here are the top free programs.

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