Crypto exchange M2 issued an announcement in response to the security incident, saying that at 7:16 on October 31, M2 had a cyber security incident involving $13.70 million, M2 took full responsibility for the potential loss, all services have now been restored, and M2 has taken additional control measures. Previously, according to ZachXBT, crypto exchange M2 was hacked yesterday, and the multi-chain hot wallet lost about $13 million.