Polymarket paused international trading after a security issue involving a third-party provider

Polymarket, a prediction market platform, ceased trading on its international site on Thursday due to a security breach involving a third-party provider. The company stated it paused trading "out of an abundance of caution" after discovering and rectifying the issue affecting its international platform. Trading was halted for approximately an hour before resuming later that afternoon.

Polymarket assured traders that it would fully reimburse any affected parties. The company reported the incident to a UK law enforcement agency, while DebugBear, the UK-based company behind the third-party provider, also experienced a security incident that affected its website. The extent of the impact on traders using Polymarket was unclear, but the company pledged to make it right.