According to @PeckShieldAlert on Dec 17, 2025, YearnFinanceV1 suffered an exploit with an estimated total loss of about $300,000. According to @PeckShieldAlert, the exploiter swapped the stolen funds into 103 ETH now held at address 0x0F21...4066. According to @PeckShieldAlert, the alert identifies the impacted environment as YearnFinance V1 and does not detail the attack vector.

According to @PeckShieldAlert, Yearn Finance suffered an exploit with an estimated total loss of approximately 300,000 dollars. According to @PeckShieldAlert, the attacker converted the stolen funds into 103 ETH and currently holds the funds at address 0x0F21...4066. According to @PeckShieldAlert, traders should monitor outbound movements from 0x0F21...4066 for potential transfers to exchanges or mixers as an immediate on-chain risk signal. According to @PeckShieldAlert, the alert did not include remediation details or a recovery plan from Yearn Finance.

According to @PeckShieldAlert, Yearn Finance suffered an approximately $9 million exploit where an attacker minted a near-infinite amount of yETH and drained the pool in a single transaction, and about 1,000 ETH (around $3 million) was sent to Tornado Cash (source: @PeckShieldAlert on X, Dec 1, 2025). For trading, monitor YFI spot and perpetual markets, yETH-linked liquidity, and on-chain flows related to the 1,000 ETH mixer outflow flagged in the report for signs of liquidity stress or volatility (source: @PeckShieldAlert on X, Dec 1, 2025). Consider tightening risk on DeFi exposure and setting alerts for additional transfers from the exploiter wallet given the confirmed pool depletion and Tornado Cash routing described in the alert (source: @PeckShieldAlert on X, Dec 1, 2025).