Polymarket halts trading for an hour after vendor compromise, says impacted users will be ‘made whole’
Polymarket temporarily halted trading on its international platform for one hour following a third-party vendor compromise. Hackers exploited the breach to distribute cryptocurrency-draining JavaScript, resulting in unauthorized wallet withdrawals. While trading has since resumed, the exchange announced that all affected users will be made whole. The platform has referred the matter to U.K. authorities as investigations into the security incident continue.
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- ✓ Polymarket halted trading on its international platform for an hour after a vendor was compromised.
- ✓ Impacted users will be made whole by the exchange.
- ✓ Hackers compromised a third-party service to distribute cryptocurrency-draining JavaScript.
- ✓ Polymarket has referred the matter to U.K. authorities.
What changed
Polymarket suspended trading for an hour after a third-party vendor compromise enabled hackers to drain funds from user accounts.
Live updates
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Polymarket Halts International Trading After Vendor Compromise
Polymarket temporarily halted trading on its international platform for one hour following a third-party vendor compromise. Hackers exploited the breach to distribute cryptocurrency-draining JavaScript, resulting in unauthorized wallet withdrawals. While trading has since resumed, the exchange announced that all affected users will be made whole. The platform has referred the matter to U.K. authorities as investigations into the security incident continue.
Why it matters
The incident highlights the operational vulnerabilities introduced by third-party software dependencies in decentralized finance and prediction markets. Breaches targeting external service providers can rapidly impact user funds before platforms can intervene. Security firms and platforms are increasingly forced to scrutinize external code integrations to prevent malicious scripts from executing inside user interfaces.
What is confirmed
- Polymarket halted trading on its international platform for an hour after a vendor was compromised.
- Impacted users will be made whole by the exchange.
- Hackers compromised a third-party service to distribute cryptocurrency-draining JavaScript.
- Polymarket has referred the matter to U.K. authorities.
Still unconfirmed
- Reports indicate user losses range between $1.4 million and $2.65 million in cryptocurrency.
What to watch next
- Official reports from U.K. authorities regarding the stolen funds and attacker identity
- Confirmation of the exact financial total reimbursed to impacted users
confidence 95%Sources used for this update (9)
- CNBC — Some Polymarket user funds stolen by hackers, exchange referring matter to U.K. authorities
- NBC News — Polymarket trading halted after vendor compromise; impacted users will be ‘made whole’
- Reuters — Polymarket halts trading on international platform after third-party provider compromised
- WIRED — Polymarket Halted International Trading After Hackers Drained Accounts
- Yahoo Finance — Polymarket Halts Trading as Users Report $1.4 Million Drained
- www.ibtimes.com — Compromised Software Caused Polymarket To Pause Trading. Some ...
- www.nbcnews.com — Polymarket halts trading for an hour after vendor compromise ...
- www.bleepingcomputer.com — Polymarket halts trading after crypto-draining script breach ...
- www.wired.com — Polymarket Halted International Trading After Hackers Drained ...
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