South Korean police confirmed for the first time that 342,000 $ETH was stolen from Upbit, South Korea's largest exchange, in 2019 by North Korean official hacker groups Lazarus and Andariel. 57% of $ETH was exchanged for Bitcoin at a low price, and the rest of the assets were laundered through 51 overseas exchanges. After 4 years of tracking, the police recovered 4.8 Bitcoins from a Swiss exchange and returned them to Upbit.