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Polymarket Hacked: $3M Stolen via Third-Party Flaw
26 Jun
Summary
- Polymarket lost approximately $3 million in crypto assets.
- A third-party vendor dependency led to a malicious script injection.
- The platform is fully refunding all affected users for their losses.

Polymarket, a platform for trading on the outcomes of real-world events, recently experienced a significant security breach. The incident involved the compromise of a third-party vendor, which allowed malicious scripts to be injected into the platform's frontend, affecting some users.
Blockchain monitoring firm PeckShield estimates that approximately $3 million in cryptocurrency was stolen from around 11 users. This breach has sparked criticism within the community, with some users expressing disappointment and recalling past warnings about security vulnerabilities.
In the aftermath, Polymarket confirmed the security incident and stated that it has removed the affected third-party dependency. The company is actively contacting impacted users and has committed to refunding them in full for their losses.