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Polymarket.com breach fixed, trading back online with full reimbursement

International platform Polymarket.com was hit via a compromised third party provider on Oct 29.

Trading was halted, then resumed at approximately 3pm ET and is now fully back online.

First reported Oct 29, 2026, 18:38 UTC

Source reports

  • Polymarket says third-party provider was compromised, issue fixed; affected users will be made whole — link — Rickler Feed, Oct 29, 2026, 18:38 UTC
  • ⚠️ Polymarket confirms third-party provider breach after user fund drains, promises full reimbursement Source — ahboyashreads, Oct 29, 2026, 18:48 UTC
  • ⚠️ Polymarket confirms third-party provider breach after user fund drains, promises full reimbursement Source — Rickler Feed, Oct 29, 2026, 18:48 UTC
  • 🚨 UPDATE: Polymarket says it has fixed an issue involving a compromised third-party provider and will make affected users whole, with trading temporarily halted as it works to restore the platform. — @Cointelegraph (X), Oct 29, 2026, 18:50 UTC
  • Polymarket pauses trading after $2.65 million exploit, says third-party provider was compromised — Закрепи.sender, Oct 29, 2026, 19:00 UTC
  • Polymarket said was hit via a compromised third party Oct 29 Users reported unauthorized sales and withdrawals of about $800k Polymarket said the issue is fixed and impacted users will be made whole Trading halted then resumed fully online — @PopaRecon (X), Oct 29, 2026, 19:13 UTC
  • Polymarket promises reimbursement after third-party compromise Polymarket confirmed a third-party compromise and promised to reimburse affected users. Its trading API is back to operational, but reimbursement timing remains unconfirmed… — Закрепи.sender, Oct 29, 2026, 19:35 UTC
  • ⚡️UPDATE: Polymarket says trading is fully back online and it will reimburse ALL affected traders. It says one of its third-party providers was compromised, affecting its international platform, Polymarket(.)com. The issue has been identified and fixed, and the incident has been… — @coinbureau (X), Oct 29, 2026, 19:43 UTC

Excerpts are quoted from the linked sources, which own their text.

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