Not hacked in the normal sense but there have been kids who needed their sleeping parents' phones unlocked, so they just put the phone to their parents' fingers...

By news stories?

Given the amount of media attention there was when the early proof of concept hacks emerged, I'd be amazed if they wouldn't be all over any story that had even the slightest suggestion that someone might have lost data as a result of a stolen phone having been hacked via TouchID.