The yETH product of Yearn Finance was attacked, and the attacker seems to have exploited a vulnerability to mint an almost unlimited amount of yETH, draining the pool in a single transaction and profiting approximately 1,000 ETH (about 3 million USD), with some of the funds already transferred to Tornado Cash; on-chain data shows that the attack involved multiple new contracts that were deployed and self-destructed afterwards, and the specific scale of the losses has not yet been clarified. Yearn stated that it is investigating the incidents related to the yETH LST stable pool and emphasized that the V2 and V3 Vaults were not affected. (The Block)