You’re scrolling through Facebook like any other day when a friend request pops up from a pretty girl. You accept, and she sends you a naughty picture. You send one back, just to be polite, or maybe because she asked nicely. Maybe you move the conversation onto Skype for a live show. But then she demands money, hundreds of dollars, and threatens to send your naked photo to your friends, your family and — worst of all — your employer.