Yearn Finance's yETH vault appears to have been compromised, with roughly $3 million worth of Ethereum now traced to Tornado Cash. The funds vanished into the crypto mixer shortly after the suspected exploit. Security researchers are still piecing together how the attack unfolded, but the swift movement to a mixing service suggests whoever's behind this knew exactly what they were doing. DeFi protocols remain prime targets—this incident is yet another reminder that smart contract vulnerabilities can cost millions in minutes.