Fraudsters tried to move at least $10 million through Polymarket using stolen cards, triggering a U.S. investigation

Polymarket is under U.S. scrutiny after fraudsters allegedly attempted to process at least $10 million with stolen cards on the platform. For high-risk PSPs, the useful part is not the headline drama but the operational one: card abuse at this scale tends to pull in compliance, acquiring, and regulatory attention fast.

1. The reported amount is at least $10 million, and the method was straightforward: stolen cards were used in an attempt to move funds through Polymarket.
2. The platform is facing an investigation in the United States. The source does not provide further details on the scope or status of that probe.
3. For payment teams in high-risk verticals, this is the familiar pattern: once card fraud reaches this level, it stops being just a chargeback problem and becomes an acquiring and regulatory problem as well.