Josh is encrypted as well and the second key is likely his. The scenario seems to point to his parents locking things down so they could get Josh away without being tracked through Cerebus, but they were tracked in another way and run off the road to their death. Josh isn't on the enemies of his parents radar, but is the mole privy to Gman Kinkaid's recent findings? He did play the video of Josh's takedown of the Ninja's in the hospital.
More questions than answers...I'm really enjoying this story.