https://techcrunch.com/2019/12/03/ethereum-developer-virgil-griffith-accused-of-helping-north-korea-evade-sanctions/

On Friday, the United States Attorney's Office for the Southern District of New York announced that Ethereum Foundation staff member Virgil Griffith was arrested. He faces charges of conspiracy following a trip to North Korea and a presentation at the Pyongyang Blockchain and Cryptocurrency Conference.

In particular, he allegedly provided services to the Democratic People’s Republic of Korea (DPRK, also known as North Korea) without obtaining approval from the U.S. Treasury Department’s Office of Foreign Asset Control.