CertiK has detected new activity related to the FTX drainer, with a significant conversion of 5,624 ETH to BTC through a bridging transaction. This follows previous alerts indicating the hacker responsible for stealing millions from FTX was back in action, potentially bridging up to 30,000 ETH to BTC. CertiK's monitoring tool had previously identified the hacker's conversion of approximately 15,000 ETH to BTC on September 30, with the last noted transaction before this activity in November 2022.

The hacker's methods involve using a peel chain to launder money, with over 80 Bitcoin wallets drained during the bridging process. The timing of these transactions, just before the fraud trial of former FTX CEO Sam Bankman-Fried, is noteworthy, but no connection has been established.