The incident has been described as one of the most significant code leaks in recent times, involving the exposure of Claude Code.
Anthropic executives said it was an accident and retracted the bulk of the takedown notices.
Security researcher Chaofan Shou discovered on March 31 that Anthropic's Claude Code CLI tool had its full TypeScript source code sitting in plain sight on the public ...
Update, Jan 13th, 2026: Multiple Target employees have now confirmed in our follow-up report the authenticity of leaked source code sample set and shared internal announcements regarding an access ...
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