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[ARTICLE · art-160978] src=osintsights.com ↗ pub= topic=ai-tools verified=true sentiment=↓ negative

Malicious Claude Code Extension Targets 5,000 Developers with SSH Backdoor

A malicious version of the Claude Code extension was published to a trusted VS Code marketplace and served for nearly 11 hours, putting 5,000 developers at risk of a persistent SSH backdoor. The malware was hidden in a JavaScript loader that executed immediately without requiring any user interaction.

by read1 min views1 publishedOct 30, 2026

A malicious version of the popular Claude Code extension was compromised, putting 5,000 developers at risk of a persistent SSH backdoor malware that was served from a trusted VS Code marketplace for nearly 11 hours. The sneaky malware was cleverly hidden in a JavaScript , allowing it to execute immediately without requiring any user interaction.

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