Polymarket Resumes Trading After Security Breach

Polymarket restored trading operations after a temporary halt caused by a third party security incident and pledged full reimbursement to affected users. The platform confirmed the issue was resolved.

FILE PHOTO: Polymarket logo is seen in this illustration taken, August 3, 2026. REUTERS/Dado Ruvic/Illustration/File Photo

Polymarket restored platform trading on Thursday evening and promised full financial reimbursements to all affected users following a security breach. The platform halted activity after a third-party vendor compromise involving web monitor DebugBear. The incident underscores operational vulnerabilities as prediction markets scale rapidly across global finance.