"Your computer is infected" fake anti-virus pop-up alert scams "Warning—your computer is infected! System detected virus activities. They may cause critical system failure. Click here to get available software."

You may be one of the numerous people who have received similar pop-up alerts. They commonly appear after you open an email attachment, download files, visit websites programmed to download malicious software or click on a pop-up advertisement.

Edge Computers warns consumers to be wary of fake anti-virus alerts. NEVER click on pop-up anti-virus alerts.

Scammers often use the names of well-known companies that specialise in computer software to gain your trust. The pop-up advertisements aim to mimic genuine warning alerts generated by computer security software.

The software or "free scan" offered in pop-up alerts often doesn't work or actually infects your computer with the dangerous programs it is supposed to protect against.

This scam aims to either charge you for bogus software and/or obtain your personal information. Once your computer is infected, the scammer commonly gathers personal information to steal your identity or to sell it to other criminals.

Although the majority of anti-virus pop-up alerts are fake, there is an off-chance that you have received a legitimate virus warning. If you are unsure whether it is a genuine warning, check the official virus page of your anti-virus vendor or ask a computer professional.

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