The original attacker for the $61 million Curve, Metronome, and Alchemix exploit began returning funds that were drained in the attack. The Alchemix Finance developer wallet received approximately 4,821 Ether ($8,891,578) in a series of three transactions from the attacker.
Curve Finance was exploited via a reentrancy bug on July 30. The exploit affected pools created through the Vyper protocol, including pETH-ETH, alETH-ETH, and msETH-ETH. Over $61 million worth of tokens was lost in the attack. Pools not created through Vyper were unaffected.