Polymarket Pauses Trading After Security Breach Reports
WHO:
Cointelegraph - Polymarket, a prediction markets platform, and one of its third-party providers were involved.
NBC News - Polymarket and a vendor were involved.
WHAT:
The Guardian - Polymarket said it halted trading “out of an abundance of caution” after identifying and fixing the issue.
The Guardian - Polymarket said, “We’ll make this right and are fully reimbursing all affected traders.”
IJR - Polymarket said it fixed the issue, would compensate affected users, and referred the incident to law enforcement; trading remained paused while it worked to restore the platform.
Wired - Trading has resumed, and Polymarket says affected traders will be made whole.
Bloomberg Markets - Polymarket is investigating a series of well-timed, profitable trades involving the Israeli election.
Cointelegraph - Polymarket suspended trading.
NBC News - Polymarket briefly halted trading on its international platform.
Cointelegraph - The article reported that users’ funds were being drained.
NBC News - The article reported stolen user funds.
WHERE:
The Guardian - Polymarket referred the incident to a law enforcement agency in the United Kingdom.
The Guardian - Reports linked the incident to DebugBear, a UK-based website performance-monitoring company.
NBC News - The trading halt affected Polymarket’s international platform.
WHEN:
Cointelegraph - The trading suspension occurred on Thursday.
NBC News - The platform halted trading for an hour.
WHY:
Bloomberg Markets - The trades raised concerns about potential insider trading on prediction markets.
Cointelegraph - Polymarket reported that one of its third-party providers had been compromised.
NBC News - The halt followed a vendor compromise and reports of stolen user funds.
HOW:
The Guardian - DebugBear said it was “impacted by an ongoing security incident” and advised clients using one of its products to remove the embed code from their websites.
Cointelegraph - Polymarket responded to the reported provider compromise by suspending trading.
NBC News - Polymarket halted trading on its international platform for an hour.
(UPDATED October 30, 2026 04:00 UTC)
Polymarket suspended trading on its international platform after a third-party provider was compromised and reports emerged that users’ funds had been stolen. The company said it fixed the issue, would reimburse affected traders, and referred the incident to UK law enforcement; trading later resumed. Separately, Polymarket is investigating a series of well-timed, profitable trades tied to the Israeli election that raised concerns about possible insider trading.
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(UPDATED October 29, 2026 23:07 UTC)
Polymarket suspended trading on its international platform after a third-party provider was compromised and users reported stolen funds. The platform later resumed trading, said affected users would be made whole, and referred the incident to law enforcement. Polymarket is also investigating a series of profitable trades tied to the Israeli election that raised concerns about possible insider trading.
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(UPDATED October 29, 2026 21:04 UTC)
Polymarket is investigating a series of profitable, well-timed trades involving the Israeli election amid concerns about possible insider trading. After a third-party provider was compromised and users’ funds were reportedly stolen, Polymarket halted trading on its international platform for an hour. Trading has resumed, and the company says affected traders will be made whole.
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(UPDATED October 29, 2026 20:06 UTC)
Polymarket briefly halted trading on its international platform for an hour after a third-party provider was compromised. The suspension came amid reports that users’ funds had been drained or stolen. Polymarket said the incident involved one of its vendors.