User blog comment:ScoobycoolDoo/Who's the mole?/@comment-174.52.244.230-20111120000546

Why is it not possible that when the Joker compromised the cave, he "played" with the computers allowing access to files of mission reports or bugged the cave. The only problem with this idea that I can see is that the Justice League would have checked for something, but it's possible that it's something that they missed.