Anthropic confirms it leaked Claude Code source code — spilling some of its biggest secrets

Claude Code's entire source code has been leaked and the internet is up in arms.

"2026 Just Got Crazy": Internet Erupts After Anthropic Source Code Leak Shakes AI Industry

The incident has been described as one of the most significant code leaks in recent times, involving the exposure of Claude Code.
ExtremeTech

Claude Code's Own Full Source Code Leaked

On Tuesday, a security researcher named Chaofan Shou revealed on X that he had found a 59.8MB JavaScript source map file in a public release of Anthropic's Claude Code. This file is intended for ...

'Human error': Anthropic responds to leak of 3,000 files from its AI coding tool’s source code

Anthropic accidentally leaked a large amount of internal code related to its Claude Code tool, exposing how the system works.

Anthropic says its leak-focused DMCA effort unintentionally hit legit GitHub forks

“The repo named in the notice was part of a fork network connected to our own public Claude Code repo, so the takedown ...

Claude Code's CLI source code has leaked all over the internet after a human error

Pesky humans.
Bleeping Computer

Target's dev server offline after hackers claim to steal source code

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 ...

Anthropic confirms it leaked 512,000 lines of Claude Code source code — spilling some of its biggest secrets

Security researcher Chaofan Shou posted on X, saying “Claude Code source code has been leaked via a map file in their npm ...