Polymarket Hack Drains Estimated $2.7M From Hundreds of Traders

Hackers siphoned an estimated $2.7 million from hundreds of Polymarket accounts Thursday (Oct. 29) after compromising software supplied by a third-party provider, prompting the prediction market operator to suspend trading temporarily and promise reimbursements. Blockchain analytics firm Bubblemaps estimated that around 700 users were affected by the attack on Polymarket’s international platform. The company has not confirmed the number of victims or the amount stolen, but said it had fixed the issue and would make affected customers whole. The incident affected Polymarket.com, its cryptocurrency-based international exchange, not Polymarket US, which operates separately under US financial regulation.