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I Installed a Compromised npm Package with Claude Code — Then Built This Plugin to Stop It

Picture this: Your AI coding buddy fires off 'npm install axios' — and it's laced with malware. One dev built attach-guard to slam the brakes, turning Claude Code into a supply chain fortress.

DevTools Feed Apr 03, 2026 4 min read
attach-guard blocking compromised axios npm install in Claude Code terminal

⚡ Key Takeaways

  • attach-guard uses unskippable PreToolUse hooks to block risky package installs in Claude Code before execution.
  • Catches malware, fresh publishes, low supply chain scores across npm, pip, Go, Cargo — auto-suggests safe versions.
  • Open-source fix for AI agents' blind install vulnerability; predicts it'll become standard by 2025.
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#AI Coding Agents #Claude Code plugin #npm-security #supply chain security

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Originally reported by dev.to

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