Leaked code for the iBoot section of iOS 9 was uploaded to GitHub this week, leading to concerns that the software may have fallen into the wrong hands. Apple has already made maneuvers to try to limit the damage caused, but the company should be worried about such leaks happening in the first place.
https://www.notebookcheck.net/Apple-in-damage-limiting-exercise-over-code-leak.281904.0.html