Polymarket Hack: Users Report Drained Accounts as Trading Halts

TLDR Polymarket halted trading on Thursday after saying one of its third-party providers was compromised. The platform went into “cancel-only” mode after its Predictions Trading API had a “major outage.” Users reported accounts drained of thousands of dollars after positions were sold without consent. DeFi Llama tracked about $2.7 million in losses, just under the June breach total. Polymarket said impacted users will be made whole, and all systems were operational as of 7:05 pm UTC. Polymarket halted trading on Thursday after saying one of its third-party providers was compromised.