Polymarket stolen funds: One account withdrew at least $2.7M across 710 wallets

Polymarket users reported stolen funds on October 29, with some claiming losses of hundreds of thousands of dollars , prompting the prediction market platform to restrict trading. The company said a compromised third-party provider affected its international exchange and pledged to reimburse affected users. Users first flagged unauthorized withdrawals on social media that afternoon. Polymarket entered cancel-only mode , paused relayer actions and temporarily halted international trading as a precaution during its investigation. Its U.S. platform was not compromised .