Malicious Claude Code extension on Cursor planted SSH backdoors
A malicious version of Anthropic's Claude Code VS Code extension was distributed through Cursor's extension marketplace for approximately 11 hours on October 29, exposing up to 5,000 developers to malware designed to install persistent SSH backdoors.
Excerpt from the primary source: BleepingComputer
Who is affected
Small businesses · Developers
Affected technology: Claude
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
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