There’s a thriving industry of tech support scammers that take advantage of unsuspecting Windows (and occasionally OS X) users, persuading them that their systems are broken or misbehaving in some way and then charging them extortionate fees to “repair” their machines, or worse, installing malware directly.
Many of them cold call their victims, but others advertise in online search engines, buying up ads with tech support keywords and acquiring their victims this way.
