The PUP and all the issues regarding the application occurs on macOS devices only However, it's a fact that MacKeeper is NOT a virus, and it can't perform illegal activities on the user's PC. A part of users claim it to be one of the best optimization tools used ever the others consider it to be a virus due to advertisements and pop-up ads. However, when looking at its reviews online, users' opinions divide into two groups.

Its developers claim that it's a number one selection of millions of Mac users due to powerful scan engine, 24/7 support service, and other advantages.

This suspicious App is promoted as a Mac maintenance and optimization tool. Some people claim MacKeeper is a virus due to irritating pop-up ads and issues regarding the fake software installs. If you see pop-ups, banners, redirects, and other material on the screen that is keeping you from accessing normal content, surfing common sites, the PUP is most likely running on the machine. It should be a useful system optimizer with security and AV engine features but adware creators abuse the name and inject PUPs on websites you visit, so revenue can get generated and the shady program installed without your permission. MacKeeper is the program that has not so positive reputation online due to intrusive advertising campaigns and PUPs associated to this name of software. What is MacKeeper pop-up ads? MacKeeper – the program that should provide useful features and improve the performance of macOS devices

Advanced mac cleaner pop up virus