Tags: security breach

Anthropic unintentionally published internal source files for its Claude Code AI coding tool when releasing version 2.1.88 to the public npm registry. The mistake included a source map that revealed more than 500,000 lines of code across nearly 2,000 files. Security researcher Chaofan Shou shared an archive link on X, generating massive attention. Anthropic confirmed the leak as a human error, emphasized that no customer data or credentials were exposed, and said it is taking steps to prevent a recurrence. The incident offers developers a rare glimpse into the tool’s architecture while raising security concerns for the company. Read more

Anthropic experienced two consecutive incidents in which internal files were unintentionally exposed. The first leak, reported last week, made nearly 3,000 internal documents public, including a draft blog post about an unreleased model. The latest incident occurred when the company released version 2.1.88 of its Claude Code package, accidentally bundling roughly 2,000 source code files and over 512,000 lines of code. Anthropic labeled the events as human‑error packaging issues rather than security breaches. The leaks have drawn attention from competitors and developers, especially as OpenAI recently halted its Sora video‑generation product amid rising competition from Claude Code. Read more