In April, the Secret Service took 100 Bitcoins from Clark, NYT reports. Weeks later, Bennett got a letter explaining that the Secret Service had recovered 100 of his Bitcoins.
According to the NYT, less than 2 weeks after the Secret Service seized the 100 Bitcoins from Clark, he began dealing with the Twitter break-in.
It appears Clark got his start as a cybercriminal by fooling fellow Minecraft players into buying names or digital capes that he never supplied. By the time Clark was arrested for last months Twitter hack, he was living in his own Tampa apartment, total with an expensive gaming setup.
The complete profile by the New York Times can be found here.