The U.S. Securities and Exchange Commission has filed charges against a major cryptocurrency platform, alleging a $2.5 billion fraud scheme and seeking to freeze related digital assets. The case marks one of the agency’s largest enforcement actions involving crypto markets.

According to the announcement, regulators are accusing the firm of misleading investors and mishandling funds tied to its platform. The SEC said the move to freeze assets is intended to preserve value while the legal process unfolds.

The action comes amid heightened scrutiny of the digital-asset sector, where U.S. regulators have stepped up enforcement against firms accused of deceptive practices, weak controls, and investor harm. The latest case could become a major test of how far regulators can go in policing large crypto businesses.

No final court finding has been made. The company has not been proven liable unless and until a court rules on the allegations.