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Business & Finance · October 29, 2026

Polymarket Pauses International Trading After A Third-Party Provider Was ‘Compromised’

4 sources →

Polymarket temporarily halted trading on its international platform on Thursday following a security breach involving an unnamed third-party provider. The incident resulted in unauthorized withdrawals from some user wallets, which traders first flagged on social media. Polymarket has since fixed the issue, resumed trading, and pledged to reimburse all affected users. The company’s U.S. platform was not affected by the breach, and the matter has been referred to law enforcement, including U.K. authorities.

Read the original coverage

Reported by multiple outlets

  • Polymarket reported an outage on its international platform on Thursday.
  • Trading was temporarily halted in response to the incident.
  • A third-party provider was compromised, leading to the security issue.
  • Some users experienced unauthorized withdrawals from their wallets.
  • Polymarket has pledged to reimburse or make whole the affected traders.

Reported by only some outlets

  • CNBC reports that the matter has been referred to U.K. authorities.
  • CNBC notes that trading resumed at 3 p.m. ET.
  • CNBC specifies that the company's U.S. platform was not compromised.

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