Polymarket compromise swaps script, $2.7M refunded
🛡️ Malicious code replaced a DebugBear page-speed script on Polymarket on October 29, allowing attackers to trigger signed-in traders' wallet signers and transfer positions and tokens to a hacker-controlled address. Blockchain traces show roughly $2.64 million in POL tokens moved within an hour; Polymarket is refunding about $2.7 million to 726 wallets and returning $3.9 million total to affected users. DebugBear says its DNS records were compromised and customers should remove its embed; Polymarket has cleared caches, reset sessions, paused trading and is adding stronger CSPs, pinned versions and sandboxing.