Home / Technology / Crypto Hackers Breach Prediction Market, Drain Wallets
Crypto Hackers Breach Prediction Market, Drain Wallets
26 Jun
Summary
- Hackers compromised third-party vendor to access user accounts.
- Malicious script injected into Polymarket's frontend.
- Reportedly part of a large phishing attempt targeting crypto wallets.
Prediction market platform Polymarket disclosed a significant security breach on Thursday, June 25, 2026. Attackers exploited vulnerabilities by compromising a third-party vendor, subsequently injecting malicious script into Polymarket's frontend. This unauthorized access allowed cybercriminals to drain funds from a number of user accounts.
While the platform has assured users that it will fully refund all stolen money and directly notify those affected, specific details regarding the breach's extent remain undisclosed. Blockchain monitoring firms have reported that this incident may be part of a larger phishing scheme targeting cryptocurrency wallets, with an estimated $3 million in cryptocurrency transferred out of Polymarket accounts to Ethereum.
This breach occurs as Polymarket celebrates reaching over $1 billion in annualized revenue, coinciding with peak trading activity during the 2026 FIFA World Cup. The platform, which has support from Donald Trump Jr., has previously faced scrutiny, including reports of paying influencers for misleading advertisements amplified by coordinated social media accounts.
