The pop-up states that the site has detected four viruses and encourages visitors to click 'OK' to begin the 'repair process'. This deceptive page displays a pop-up window presented as an 'Important alert'. PUAs feed users with intrusive ads and gather data. Typically, these websites are opened by potentially unwanted apps (PUAs) that people have installed on their browsers or computers. Like most scams of this type, it attempts to trick people into downloading a dubious application - in this case, cleaning software for Mac computers. 'Your Mac is infected with 4 viruses' is a fake virus alert that appears when opening a scam website. What is 'Your Mac is infected with 4 viruses'?
