For Microsoft to send out some ransom-ware.
Oh, wait, they already have, it is called Windows-10. Don't forget to send some $$$ for the next update that we will push onto your machine and ruin all your applications, causing you to spend even more $$$.
Somehow I wish it were a joke, but from the looks of it, it isn't anymore. (*SIGH*). Maybe that is why I can get a call from someone being a "Windows specialist" wanting to clean my machine.