Anthropic's attempt to remove leaked Claude Code source code from GitHub using a DMCA notice inadvertently caused the takedown of nearly 8,100 repositories, including many legitimate forks of its official public code base. While GitHub reversed this expansive action after developer backlash, the incident underscores the extreme difficulty companies face in controlling leaked intellectual property. The overzealous takedown swept up repositories that didn't contain leaked code but instead forked Anthropic's publicly shared Claude Code repository, used to encourage community bug reports and fixes.

Developer Robert McLaws criticized the effort, stating 'I'm sorry that your people shipped your source code, and that your lawyers don't know how to read a repo,' and threatened a counter-notice. Anthropic acknowledged the mistake, with Claude Code head Boris Cherny calling it 'not intentional' and attributing it to 'a communication mistake' by Thariq Shihipar. The company now seeks to restrict future takedowns to only the 96 specifically named repositories in its original notice.

This episode highlights the ongoing challenges in balancing copyright enforcement with open-source collaboration, as leaked code continues to proliferate despite such efforts.