Polymarket pauses its international exchange for about an hour, citing a compromised third-party provider
On 29 October 2026 Polymarket put its international platform, Polymarket.com, into cancel-only mode and then halted trading, saying one of its third-party providers had been compromised and that it had referred the matter to law enforcement. Trading resumed at about 3:00pm ET (19:00 GMT), and the company says it is fully reimbursing affected traders.