Did his PhD at Caltech under Christof Koch in computation and neural systems, was a super talented mathematician... and then he gets involved in crypto.
I remember conversations with friends only a few years ago in which we would lament how young brilliant minds were eventually going on to work on adtech, and we would sigh and hope that the tide would turn.
Boy, we were not prepared for this tide.
Anyway, the NYSD release gives some interesting details: (https://www.justice.gov/usao-sdny/pr/manhattan-us-attorney-a...)
GRIFFITH identified several DPRK Cryptocurrency Conference attendees who
appeared to work for the North Korean government, and who, during his
presentation, asked GRIFFITH specific questions about blockchain and
cryptocurrency and prompted discussions on technical aspects of those technologies.
After the DPRK Cryptocurrency Conference, GRIFFITH began formulating plans to
facilitate the exchange of cryptocurrency between the DPRK and South Korea, despite
knowing that assisting with such an exchange would violate sanctions against the
DPRK. GRIFFITH also encouraged other U.S. citizens to travel to North Korea,
including to attend the same DPRK Cryptocurrency Conference the following year.
Smart enough as he was, I'm sure he knew of the terrible human rights track record NK had. That he chose to start helping the NK government evade sanctions, I am not able to muster a lot of sympathy for the guy at this point.