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What is Anti-virus software?

Anti-virus software, sometimes called a virus killer, protects your computer against viruses. Analagously to human diseases, these are programs that install themselves on your computer in secret, often to cause damage and/or use your network connection to replicate themselves. The anti-virus software identifies the virus and stops it from installing on your computer. As there are new viruses developed every day, it is really important that your anti-virus protection is up to date.