I heard she sent a photo to a closed group on facebook and one of those people posted the pic (which was nothing bye the way) on twitter. In this case I'm not sure what this has to do much with Facebook security. That is someone taking a pic you sent them and then they sent it out to a public medium afterwards. Or that is how the news told me the story.
If it was a nude, then I can get the disappointment. But if the pic the news station showed is the pic that was sent, there was nothing that wouldn't bore you in a moment. A dime a dozen photo with no omg shock to it at all. I unfortunately have tons of photos of me on the net that I never approved, but was tagged and luckily I don't do anything that would be omg shocking. To me this is now standard operations on how photo's work.