The Infini hacker in Februaary 2025 used Tornado Cash to obfuscate their identity before exploiting a contract they had created in November 2024 to steal $49.52 million in USDC

Quotes that support claims

The attacker funded the wallet used in the hack with 1 Ether from the cryptocurrency mixing service Tornado Cash. They then transferred $49.52 million worth of USD Coin from Infini through a contract they created in November 2024.