Fake McAfee pop-up windows

Me and some of my MFP friends have been getting those fake pop-up windows that are supposed to look like a McAfee warning saying, "You have a virus.....". Clicking on them is the easiest way to download malware onto your computer and I'm getting REALLY tired of them. It only happens in MFP. Are we the only ones it is happening to? Can't they do something about it???