Polymarket says hackers stole $3 million via third-party vendor breach
Polymarket disclosed on Friday, June 26, 2026, that hackers stole user funds after compromising a third-party vendor. The platform later confirmed approximately $3 million was taken and said it would refund victims. The breach allowed attackers to move funds out of user accounts. A June 26 episode of Cybercrime Magazine, carried on WCYB Digital Radio, also reported the theft but did not provide additional details on scope or attack vector. Polymarket did not name the vendor involved in the incident. The disclosure comes as the CFTC-registered exchange faces separate regulatory pressure from a Senate-requested investigation.
Polymarket confirmed the stolen amount totals about $3 million and said it will refund victims.
Polymarket must absorb roughly $3 million in refunds while defending against a live CFTC investigation and Senate scrutiny. The triple pressure risks eroding user trust just as competitors target the same trader base.