Severity: HighAction: Be aware

$2 Million+ Drained From Polymarket Traders in New Supply Chain Attack

Malicious code linked to a website monitoring tool was designed to hijack logged-in Polymarket sessions and siphon user funds.

Excerpt from the primary source: SecurityWeek

Who is affected

Enterprises

What you should do · Be aware

No immediate action is indicated. Share this with the relevant teams and watch for updates.

Automated guidance based on this story's classification. Check the linked advisories for specifics.

Sources

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Original reporting

$2 Million+ Drained From Polymarket Traders in New Supply Chain Attack SecurityWeek · securityweek.com · Oct 30, 2026 · Primary source