Euler announced that they were aware of the exploit, and were "working with security professionals and law enforcement".
Euler Finance exploited for almost $200 million
The decentralized lending platform Euler Finance suffered a flash loan attack in which an exploiter stole $197 million from the project. The attacker stole $8.7 million in the Dai stablecoin, $18.5 million in wrapped Bitcoin, $135.8 million in Lido staked Ethereum (stETH), and $33.8 million in the USDC stablecoin. Although Euler was well known for its many code audits, the project had later added a vulnerable function that had not been as heavily audited.