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Know Your AI Toolchain: Lessons from the Cursor Marketplace Incident

This story is from 2026-11-05. It is preserved in the archive; the latest stories are on the live feed.

A fake Claude Code extension sat in Cursor’s marketplace for 11 hours. Here’s what every engineering team should check now, and why it’s a good moment to rethink who controls your AI stack. On October 29, a tampered build of Anthropic's Claude Code extension, version 2.1.313, appeared in Cursor's V…

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  1. 2026-11-05 13:00 · DEV Community — AI
    Know Your AI Toolchain: Lessons from the Cursor Marketplace Incident

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