The FIOD arrested a 29-year-old man in Amsterdam suspected of involvement in concealing criminal financial flows and facilitating money laundering through the Tornado Cash cryptocurrency mixing service. Tornado Cash is a decentralized Ethereum mixing service that allows users to conceal the origin or destination of cryptocurrencies. The service has been used to launder large-scale criminal money flows, including funds stolen through hacks by a group believed to be associated with North Korea. The US government has placed Tornado Cash on the OFAC sanctions list.