If you go on any type of social media, and in particular Facebook, on a semi-regular, regular or frighteningly frequent basis, this has probably happened to you:
You see that one of your friends, probably someone you haven’t heard from electronically for a while, has posted something on your wall. You go to check it out and take a step back. “Wait a minute, why is my anti-corporate activist friend posting a link to skin cream?” Then it dawns on you, their profile has been hacked by some spammer.