Cybercriminals will create pop-up ads promoting fake antivirus solutions. In reality, the ads are the viruses themselves. And if you click them, your computer may be infected. These ads will say things like, “Warning! Your computer is infected” and “Click here to get rid of the virus!” Definitely don’t click anything in the ad. Instead, shut down your browser, open a new window, and don’t return to whichever website showed you the pop-up.
Also see our article: How to Spot and Avoid Tech Support Scams