Or if he is FORMER CIA/NSA and has good reason to undermine their abuse of power...

honestly I have thought a lot about this and it really doesn't seem too far fetched to think he at least has some connection to cia/nsa/fbi just due to his ability alone to conceal his identity.  Lots of people TRY to conceal their identity, but for him to be in contact with people enough to hand over the whole project and never leave any trace of his identity sounds like it would take a lot, something that he was intentionally doing, possibly something he was trained to do