Polymarket Resumes Trading After Cyberattack: Losses Estimated at $2.7M

The international prediction platform Polymarket has resumed trading operations following a temporary suspension that the company was forced to introduce due to a cyberattack on an external British service provider. The incident caused a temporary halt in the marketplace's operations; however, according to management, normal service and user access to trading have been restored.

Scale of the Incident According to Analysts

An assessment of the attack's aftermath was provided by independent analysts Bubblemaps. According to their data, about 700 platform users were affected by the incident, and total losses amounted to approximately $2.7 million. These figures reflect the volume of stolen funds and the number of affected client accounts recorded during the investigation into the attack on the third-party provider's infrastructure.

Company Commentary and Compensation

Polymarket representatives emphasized that the platform's core infrastructure and its US division, Polymarket US, were not affected by the incident. According to the company, the attack targeted an external British service provider rather than the core trading system. Polymarket management stated that all affected clients will receive full compensation for their stolen funds.

Second Major Incident of the Year

This incident is already the second major security problem for Polymarket this year. Earlier, in June 2026, the platform also experienced a hack that resulted in clients losing more than $2 million. The recurrence of serious security issues within a single year highlights the platform's increased vulnerability and heightens focus on protecting user funds.

Reputation and Investment Dynamics

Despite regular reputation scandals and increased law enforcement attention regarding insider trading on the platform, Polymarket continues to actively attract investment. In August 2026, the company's valuation reached $21 billion following another funding round. Thus, even against the backdrop of recurring security incidents and reputational risks, the platform maintains high interest from investors and strengthens its position in the prediction market.