Polymarket said its international platform Polymarket.com was hit on Oct. 29, 2026 after a third party provider was compromised. It said it identified and fixed the issue and referred it to law enforcement in its first post.

Polymarket said its international platform Polymarket.com was hit on Oct. 29, 2026 after a third party provider was compromised. It said it identified and fixed the issue and referred it to law enforcement in its first post.

Yes, trading was halted as a precaution. It went into cancel only mode with relayer actions paused, then resumed after about an hour, with trading reported fully back online and also noted by Laura Shin and NBC News.

Yes, Polymarket promised full compensation, saying anyone impacted "will be made whole" and later "fully reimbursing all affected traders." Payout timing is not confirmed.

The provider was not named in official posts and no official loss figure was given. Unofficial estimates cited about $2.2M to $2.65M, per Unchained, with user reports of drained wallets. The U.S. platform did not appear affected.

The sources do not name the compromised provider or a confirmed victim count.