Prediction market Polymarket halts international trading after a third-party provider is compromised and calls in law enforcement

Polymarket has confirmed the security flaw was identified and resolved, and that all affected users will be reimbursed. The matter has been referred to law enforcement. As a precautionary measure, trading was halted while the platform restored access. Since the 2024 US election, prediction markets have seen a sharp rise in use, with financial institutions increasingly looking to gain exposure to event-driven contracts.