Golden Finance reported that the U.S. Department of Justice announced money laundering charges against three Russian citizens related to running cryptocurrency mixing services Blender and Sinbad, which are sanctioned by the United States. These services are allegedly used by North Korean hackers to hide cryptocurrency proceeds from cyber thefts. Two members of the gang were arrested last month, but the last person is still at large. Brent S. Wible, head of the Justice Department's Criminal Division, said these encryption mixers provide a money laundering channel for state-sponsored hacking groups and other cybercriminals, posing a serious threat to public safety and national security. Analysts believe that the case may further trigger widespread discussions on the legality and regulatory policies of crypto-mixing services, while demonstrating the government’s determination to strengthen cryptocurrency regulation.