Golden Finance reported that on February 11, Slow Mist SlowMist issued a security warning, detecting potential suspicious activity related to the Base on-chain contract 0xB5486F71...8F47834D90B1B. The contract has been upgraded to an implementation contract containing the backdoor function transferTokens. The attacker uses this function. Steal the user's assets that have previously approved the contract. Please revoke this contract authorization as soon as possible by the relevant user