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Claude Code source leak and malware disguised as leaked source

April 6, 2026The Cyber Security Hub™, Nicolas Krassas, CySecurity News

Multiple accounts point to a Claude Code source leak, and Packet Storm warns people trying to download the source got malware instead, reinforcing supply chain risk around leaked code and clones.

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QUOTES
Anthropic sure has a mess on its hands thanks to that Claude Code source leak
Anthropic sure has a mess on its hands thanks to that Claude Code source leak
Anthropic Claude Code Leak Sparks Frenzy Among Chinese Developers
They Thought They Were Downloading Claude Code Source. They Got A Nasty Dose Of Malware Instead
I would say you can’t just take the leaked source code of a commercial product and “port” your own open source version…
VOICES
The Cyber Security Hub™
Nicolas Krassas
CySecurity News
packet storm
Dr. Wesley McGrew
RELATED TERMS
leakmalwaresupply chainopen sourceclaudegithubsupply chainclaude codeopen sourcedata leakmalware analysis
OTHER FINDINGS IN LLM SECURITY RESEARCH
Claude Chrome extension zero-click XSS prompt injection chainClaude Code telemetry and file upload concerns plus safer agent isolationAI as a force multiplier for attackers and defenders, driving new training and detection programs
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