On April 25, 2024, Samourai co-founders Keonne Rodriguez and William Lonergan Hill were arrested for running an illegal money-transmitting service and aiding in money laundering.

The cryptocurrency mixing service is accused of processing over $2 billion in illegal transactions and laundering more than $100 million for criminals.

Samourai's features were specifically designed to help users conceal the origins of illegal proceeds.

Arrests were made in both the United States and Portugal, with the U.S. Department of Justice confiscating the service's web servers and domain.

The legal actions against Samourai's co-founders could establish a new precedent for the regulation and oversight of privacy-centric cryptocurrency services.