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Malicious Claude Code extension in Cursor s marketplace attempted remote access and data theft

The Decoder ·

Summary: A tampered Claude Code extension was live on the Cursor marketplace for about 11 hours, affecting up to 5,000 users. It tried to steal user data and set up remote access. Cursor took the entire marketplace offline and reinstated it after confirming there was no further risk. The

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This is a summary of a story first published by The Decoder on 30 Oct 2026. Read the full article at the source link.

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