American computer expert spoke in North Korea about cryptocurrency, and now he’s under arrest


Can an American’s comments about cryptocurrency violate his country’s sanctions against North Korea?

That question is at the heart of a criminal case against Virgil Griffith, a rabble-rousing computer scientist who federal authorities say ran afoul of U.S. laws meant to isolate and punish the rogue state when he gave a talk this year at a technology conference in Pyongyang.

Griffith, 36, was taken into custody by FBI agents Thursday at Los Angeles International Airport and faces a charge of conspiring to violate the International Economic Powers Act, the legal backbone for sanctions against North Korea, according to a statement released by the U.S. attorney’s office for the Southern District of New York, which is pursuing the case.


At a court appearance in Los Angeles on Monday, a magistrate judge ruled Griffith should go free while the case against him proceeds. Griffith was released on an $800,000 bond, which his parents and sister agreed to secure with their homes as collateral. His movements will also be monitored electronically. No date was set for his next court appearance.

“Mr. Griffith allegedly traveled to North Korea without permission from the federal government, and with knowledge what he was doing was against the law,” FBI Assistant Director in Charge William F. Sweeney Jr. said in a prepared statement. “We cannot allow anyone to evade sanctions, because the consequences of North Korea obtaining funding, technology, and information to further its desire to build nuclear weapons put the world at risk. It’s even more egregious that a U.S. citizen allegedly chose to aid our adversary.”

Brian Klein, a defense attorney representing Griffith who specializes in technology cases, said in a statement, “We dispute the untested allegations in the criminal complaint. Virgil looks forward to his day in court, when the full story can come out.”

The unusual case stems from a trip Griffith made to the North Korean capital in April to attend a small conference with about 100 other people. Griffith had sought permission in advance from U.S. officials to make the trip and, after being denied, devised a plan with the help of an unnamed accomplice to cover his tracks by entering the country through China, according to a criminal complaint authorities unsealed last week. To further conceal his plans, Griffith opted not to have the travel visa that he received from North Korean diplomats in New York placed in his passport, the complaint alleges.

At the gathering, Griffith presented a talk on the quickly evolving world of cryptocurrencies, such as bitcoin and ethereum, and blockchain, the technology underpinning the controversial monetary systems. Blockchain essentially creates a digital ledger that is stored simultaneously on millions of computers. Proponents of the decentralized networks say they allow for greater transparency as no one person is in control and all transactions can be seen by anyone with access to the ledger.

Prosecutors claim that before he spoke, Griffith took direction from a conference organizer that he should tailor his comments to address how cryptocurrencies and blockchain could be used to launder money and circumvent the punishing U.S. sanctions that prohibit U.S. citizens from exporting “any goods, services, or technology to North Korea.”


Griffith’s talk, which he titled “Blockchain and Peace,” included discussion of technical concepts and issues that need to be addressed when creating a new cryptocurrency and, after the conference, he began work on developing a new currency that would make it possible to send funds between North and South Korea, the complaint said.

The allegations against Griffith appear to be based largely, if not entirely, on two interviews he did voluntarily with FBI agents and information he allowed agents to download from his cellphone, according to the complaint. In an interview about a month after the conference, Griffith admitted to making the trip and walked agents through the basics of what he had said at the conference.

In a second conversation last month, Griffith went into greater detail, telling agents that North Korean government officials approved in advance the topics he discussed in his talk, the complaint said. Griffith also acknowledged to agents that attendees who heard him speak left the conference “with a better understanding of cryptocurrency and blockchain than when they arrived” and that his talk amounted to “a transfer of technological knowledge.” He also, however, described his talk as covering basic information that was readily available on the internet, the complaint said.

The complaint also highlights a text message Griffith sent in August to an unnamed person, in which Griffith said he wanted to send an amount of a particular cryptocurrency between North and South Korea. When the person who received the message asked whether the transaction would be a violation of U.S. sanctions, Griffith allegedly responded, “It is.”

Griffith, who had been living in Singapore for the last few years, was a known figure in computer research circles. A former hacker, he received a doctorate in computation and neural systems from Caltech and gained notoriety, among other things, for developing Wikiscanner, which allowed users to learn who made entries and edits on the Wikipedia site. Griffith did research at several respected institutions , including Stanford University and the Santa Fe Institute, and currently works at Ethereum Foundation, a research arm of the ethereum cryptocurrency, according to a curriculum vitae Griffith posted online.

A spokesman for the foundation said the group disavowed any connection to Griffith’s North Korea trip. The Foundation neither approved nor supported any such travel, which was a personal matter,” the spokesman said in a written statement.


Griffith appeared to have developed a sympathetic stance toward North Korea. On Facebook, he posted opinions about the country, including his belief that “an uncommonly large proportion of news about it happens to be fake.” In another, he re-posted an article by a socialist group titled, “North Korea Shows How a Country Can Heal After Suffering Through Imperialist Violence,” and opined that “North Korea is peak woke.”

An FBI agent who wrote an affidavit outlining some of the evidence against Griffith said in an interview Griffith expressed a desire to seek citizenship in an unnamed country.

Griffith received support online from the editor of 2600, a publication that describes itself as “The Hacker Quarterly.” The editor, who uses the name Emmanuel Goldstein online, said in a tweet that he had warned Griffith he was walking into a “trap” by talking to FBI agents, but that Griffith “was convinced they totally got where he was coming from.”

“He attended a conference! And explained the concept of cryptocurrency. These are crimes now?!,” Goldstein wrote in another tweet.