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● LIVE Updated 1h ago · 14 sources tracked

Some Polymarket user funds stolen by hackers, exchange referring matter to U.K. authorities

Polymarket temporarily halted trading on its international platform after a third-party vendor compromise led to the theft of user funds from digital wallets. Impacted traders experienced drained accounts shortly before the stoppage. Polymarket stated that it paused activity out of an abundance of caution and assured that all affected users will be made whole through full reimbursements. The incident impacted the prediction market site's international exchange rather than its regulated U.S. counterpart. The exchange referred the matter to authorities in the United Kingdom following the breach.

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  • ✓ Polymarket temporarily halted trading on its international platform after a third-party partner was compromised.
  • ✓ Affected traders reported that their funds were stolen from their wallets just before trading was paused.
  • ✓ Polymarket stated that all affected traders will be fully reimbursed and made whole.
🛡️ Source Corroboration: 14 independent reporting domains (90% confidence) ⏱ Read time: ~2 min

What changed

Polymarket suspended international trading and announced plans to fully reimburse impacted users after a vendor compromise enabled wallet thefts.

Live updates

  1. Polymarket Halts International Trading After Hackers Steal Funds

    Polymarket temporarily halted trading on its international platform after a third-party vendor compromise led to the theft of user funds from digital wallets. Impacted traders experienced drained accounts shortly before the stoppage. Polymarket stated that it paused activity out of an abundance of caution and assured that all affected users will be made whole through full reimbursements. The incident impacted the prediction market site's international exchange rather than its regulated U.S. counterpart. The exchange referred the matter to authorities in the United Kingdom following the breach.

    Why it matters

    The security incident occurred on October 29, 2026, just days before the platform faced heightened trading volume anticipated around the U.S. midterm elections. Prediction markets like Polymarket have recently drawn increased attention and regulatory scrutiny regarding operational security, state gambling laws, and insider trading allegations. Third-party software vulnerabilities remain a persistent vector for attacks targeting cryptocurrency platforms.

    What is confirmed

    • Polymarket temporarily halted trading on its international platform after a third-party partner was compromised.
    • Affected traders reported that their funds were stolen from their wallets just before trading was paused.
    • Polymarket stated that all affected traders will be fully reimbursed and made whole.

    Still unconfirmed

    • The incident reportedly led to $2.65 million in cryptocurrency theft from users' wallets.
    • The security breach originated with UK-based web performance monitoring firm and Polymarket vendor DebugBear.

    What to watch next

    • Official findings from U.K. authorities regarding the vendor investigation
    • Confirmation of the total financial loss incurred by users
    • Resumption timeline for trading on Polymarket's international platform
    Sources used for this update (16)
    1. www.yahoo.com — Yahoo
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    6. CNBC — Some Polymarket user funds stolen by hackers, exchange referring matter to U.K. authorities
    7. NBC News — Polymarket trading halted after vendor compromise; impacted users will be ‘made whole’
    8. Reuters — Polymarket halts trading on international platform after third-party provider compromised
    9. Bloomberg.com — Polymarket Trading Halted After Reports of Stolen Funds
    10. CoinDesk — Polymarket suspends trading after third-party breach leads to user losses
    11. www.cnbc.com — Some Polymarket user funds stolen, matter referred to UK ...
    12. www.ibtimes.com — Compromised Software Caused Polymarket To Pause Trading. Some ...
    confidence 90%
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