According to Decrypt, the prediction market platform Polymarket suffered a breach when malicious code was injected into its frontend via a compromised third-party vendor, resulting in approximately $3 million being stolen from around 15 user accounts. Polymarket stated that the issue has been resolved and that affected users will be fully reimbursed; the stolen pUSD has been exchanged for ETH. Last month, Polymarket experienced a separate incident in which an employee’s wallet private key was leaked, leading to the theft of approximately $700,000.
Polymarket hit by third-party supplier breach; $3 million in user funds stolen
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Summary
Polymarket experienced a security breach after a third-party supplier was compromised, enabling malicious code to be injected into its website frontend. Approximately 15 user accounts were affected, with $3 million in pUSD stolen. The stolen funds will be converted to ETH and fully reimbursed to affected users. Polymarket confirmed the issue has been resolved. This follows a May incident in which a leaked employee wallet resulted in a $700,000 loss. ETH news continues to highlight vulnerabilities in DeFi platforms.
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