At the heart of Apple's shocking FaceTime bug, which allowed just about anyone to turn an iPhone into a live microphone, stands a 14-year-old boy who stumbled upon the eavesdropping flaw more than a week before Apple took action.

"The thing that surprised me the most was that this glitch happened in the first place," said Grant Thompson, a high school freshman in Tucson, Arizona. "I'm only 14 and I found it by accident, instead of the people at Apple that get paid to find glitches."

Not only that, but Grant and his mom said they spent a week unsuccessfully trying to get Apple to do something a...