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Hackers Steal About $2.7 Million From Polymarket Traders via Hijacked DebugBear Script
Subdomain Takeover
Published on November 1, 2026 at 07:25 AM

Hackers Steal About $2.7 Million From Polymarket Traders via Hijacked DebugBear Script

On October 29, prediction market platform Polymarket suffered a supply-chain incident resulting in approximately $2.7 million stolen from 726 user wallets. Attackers compromised third-party vendor DebugBear at its domain registrar level, modifying DNS records to redirect traffic to an unauthorized server. The rogue server delivered malicious JavaScript to Polymarket site visitors, manipulating browser session states and executing unauthorized trades to exfiltrate funds.

Source: The Hacker News

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