Nobody needed to crack Tor, however: when he offered his story around, he left enough information about himself on the USB keys he sent media outlets (as well as a couple of cat pics).
From the judgement:
All three flash drives contained a file named “Romney1040-Collection.7z.” ... The unallocated space on the drives also held text strings and two photos of cats. The PricewaterhouseCoopers flash drive held the text string, “5276 dolphin kathryn.” … The Democratic Party drive had the string “4154 dolphin KnightMB.”
A series of Google searches using “KnightMB” revealed an email address,
knightmb@knightmb.dyns.org, and that a 33 year-old Tennessean named Michael Brown made online posts connected to that address
Interesting how he got caught.
He should have just enjoyed his money and pay his taxes instead of getting in trouble. People's greed for power is always their downfall.