Some scammers call and claim to be computer techs associated with well-known companies like Microsoft or Apple. Other scammers send pop-up messages that warn about computer problems. They say they’ve detected viruses or other malware on your computer. They claim to be “tech support” and will ask you to give them remote access to your computer. Eventually, they’ll diagnose a non-existent problem and ask you to pay for unnecessary – or even harmful – services.
If you get an unexpected pop-up, call, spam email or other urgent messages about problems with your computer, stop. Don’t click on any links, don’t give control of your computer and don’t send any money.
(Source: Federal Trade Commission)