Polymarket Reports User Fund Theft, Refers Case to UK Authorities

OPA WIRE, Oct 29 (OPA) — Polymarket, the decentralized prediction market platform, confirmed that unauthorized actors successfully accessed and drained a portion of user funds. The exchange is currently working to secure its infrastructure and has officially referred the matter to authorities in the United Kingdom for a criminal investigation.

The breach arrives at a sensitive time for the platform, which has seen a surge in activity throughout 2026. While the company has not disclosed the specific total of stolen assets, it confirmed that internal security protocols were triggered immediately upon detection of the unauthorized withdrawals.

This incident follows a period of rapid growth for the platform, which has become a primary venue for betting on political outcomes and global events. The exchange is currently preparing for heightened trading volume associated with the 2026 U.S. midterm elections, a period that typically draws significant liquidity and user participation.

Security experts note that decentralized platforms remain primary targets for sophisticated cyberattacks due to the nature of their smart contract architecture. Polymarket stated that it is cooperating with forensic analysts to trace the movement of the stolen funds and prevent further unauthorized access to user accounts.