U.S. law firm Gibbs Mura has launched a potential class action investigation into the April 1st hack of Drift Protocol, which resulted in approximately $280 million in losses. The investigation focuses on whether Circle failed to promptly freeze over $230 million in USDC that attackers transferred cross-chain via CCTP. Gibbs Mura is currently gathering information from affected investors to assess potential claims against Circle for not intervening during the incident.