SBI Crypto suspected of attack, with approximately $21 million in suspicious funds outflow

according to market sources, about $21 million in suspicious funds flowed out of addresses related to SBI Crypto, involving multiple cryptocurrencies such as Bitcoin, Ethereum, Litecoin, Dogecoin, and Bitcoin Cash. The stolen funds were transferred to five exchanges and deposited into the mixer Tornado Cash. It is worth noting that several indicators of this attack are similar to known North Korean hacker attack techniques. SBI Crypto is a mining pool subsidiary of the Japanese listed company SBI Group. As of now, the company has not publicly disclosed this security incident.