The head of the National Cryptocurrency Enforcement Team at the US Department of Justice (DOJ) has announced plans to crack down on cryptocurrency mixers and tumblers, as well as exchanges that violate money laundering rules. Eun Young Choi, who became director of the team last year, aims to prevent the use of cryptocurrency for illegal activities. The DOJ will also target crypto mixers and tumblers, which have been used by criminals to launder money and evade detection. The DOJ has previously taken action against entities in the crypto industry, including launching a probe against Binance for a possible violation of sanctions against Russia.