So far it seems that everyone is assuming this data was "hacked".

I have no evidence, only a gut feeling, that it was not hacked, it was leaked. Someone on the "inside" wants the truth to be known.

Clayton, you'll notice that I said "apparently hacked." I agree, it's very probably an inside job, at least partly. Although the files appear to have been distributed by someone with significant skillz, so I think the most probable thing is the insider passed info to an outsider.

PS Thanks for the link!