Circle is facing a class action lawsuit in the United States after being accused of failing to freeze funds from the Drift Protocol exploit, valued at approximately $280 million on April 1, 2026. The lawsuit was filed by investor Joshua McCollum, representing more than 100 investors, alleging that Circle allowed a significant portion of the stolen funds to be transferred across networks without intervention, thereby amplifying losses.

Exploit Timeline and Fund Flow

According to circulating reports, the incident began on April 1 when Drift Protocol suffered a major exploit resulting in losses of around $280 million. Of that amount, approximately $230 million (± IDR 3.91 trillion) in USDC was reportedly moved by the attacker from the Solana network to Ethereum.

The transfer was carried out via Circle’s Cross-Chain Transfer Protocol (CCTP). This process occurred over several hours without any freezing action or intervention from Circle.

According to the plaintiff, this window of time should have been sufficient for Circle to detect suspicious activity and take preventive measures, considering that USDC is a centrally controlled stablecoin with mechanisms such as the ability to freeze assets.

Allegations of Negligence and Circle’s Role

In the lawsuit filed in the Massachusetts District Court, Circle is accused of “aiding and abetting” as well as negligence in handling the flow of illicit funds.

The plaintiff argues that Circle had the technical capability to halt USDC transactions suspected of originating from illegal activity. However, the lack of timely action is seen as a key factor that enabled the attacker to move large amounts of funds to another network.

“Based on the data, the majority of the funds were successfully transferred through Circle’s official infrastructure without significant obstacles,” one part of the lawsuit states.

This case once again highlights the ongoing debate around the semi-centralized nature of stablecoins like USDC, where issuers maintain certain controls but are also expected to respond swiftly in emergency situations.

Impact on the Ecosystem and Drift’s Strategy

The impact of this incident extends beyond legal aspects. Drift Protocol is reportedly considering strategic changes, including the possibility of abandoning USDC and switching to USDT as a settlement asset after relaunch.

This move reflects a potential decline in confidence toward USDC among some industry participants, particularly regarding response speed in handling security incidents.

More broadly, this case could also influence market perceptions of centrally managed stablecoins, especially in terms of issuer responsibility for safeguarding user funds.

Conclusion

The lawsuit against Circle adds to the growing list of challenges faced by stablecoin issuers amid the increasing complexity of the crypto ecosystem. With losses reaching hundreds of millions of dollars, this case could become a significant precedent regarding the legal responsibilities of crypto infrastructure providers.

Going forward, the outcome of this legal process may shape industry standards, particularly in how platforms respond to exploits and protect user assets across cross-chain networks.