The truth is that an Iranian cowboy caught it with a lasso, in case any of you were wondering.
Edit: Undeniable proof of this article's absurdity: "Even if that control signal is encrypted pattern recognition during many flights over four years would have given them enough information to break the code."
Because all you do is take a few encrypted flight control readings, put them into Code Breaker 2.0, then enjoy your brand new (previously owned) stealth drone, right?