The screen shot in the upper right and the one below were taken from a client’s computer in such a state: In many cases these result in pop-up windows loading that can’t be closed or navigated past. This hijacking takes a variety of forms, but most often it’s an inescapable barrage of ads or warnings of impending doom.
Over the last several months I’ve had several people report that their computers have been hijacked.
And then…your favorite web browser suddenly seems to have a mind of its own taking you places you have no interest in going and warning you of evils on your Mac that don’t actually exist.