Yearn Finance's yETH staking product suffered a significant attack, resulting in the unauthorized minting of nearly unlimited yETH tokens. The attacker drained the pool's assets in a single transaction, transferring approximately 1,000 ETH, valued at $3 million, to Tornado Cash, a privacy-focused mixing service. Following the exploit, the contracts involved were self-destructed, obscuring further details of the attack. Yearn Finance has confirmed that its V2 and V3 Vaults remain secure and unaffected by this incident. The platform is actively investigating the breach to assess the full extent of the losses and to enhance security measures.