Anthropic mistakenly leaks its own AI coding tool’s source code, just days after accidentally revealing an upcoming model known as Mythos

Hundreds of thousands of lines of code were exposed, giving researchers insight into upcoming models and internal architecture.

Anthropic's AI coding tool leaks its own source code for the second time in a year

A researcher flagged the issue on 31 March 2026, and the code has since been archived on multiple public repositories, raising fresh questions about the company's software release practices.

Anthropic’s Claude Code Leak Sparks Panic: AI Tool’s Source Code Reportedly Exposed Online Again

Claude Code source code leak as raised fresh concerns after Anthropic’s AI coding tool was reportedly exposed online. From ...

Anthropic Accidentally Leaks Claude’s Source Code

After a researcher flagged the issue on March 31, the code spread rapidly across public repositories, raising new questions ...

Claude Code leak used to push infostealer malware on GitHub

Threat actors are exploiting the recent Claude Code source code leak by using fake GitHub repositories to deliver Vidar ...

Anthropic releases part of AI tool source code in 'error'

Anthropic accidentally released part of the internal source code for its AI-powered coding assistant Claude Code due to ...

'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 leaks part of Claude Code's internal source code

Claude Code has seen massive adoption over the last year, and its run-rate revenue had swelled to more than $2.5 billion as ...