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Claude Code leaked source code and security prompt injection concerns

April 5, 2026Miles Brundage, Boaz Barak, ludwig

The Claude Code leak sparks both curiosity about hidden features and concern about unsafe prompting patterns, with Boaz Barak warning against relying on user prompts and teaching Claude to follow instructions found in source code comments.

when you ask Claude Code to snitch on its source code and explain to you all the secrets.
I would not be relying on a user level prompt for protecting against abuse.
It seems risky to teach Claude to follow instructions it finds in source code comments.
Miles Brundage
Boaz Barak
ludwig
(((ل()(ل() 'yoav))))
securitysystem promptclaudeclaude codesystem prompt

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