Claude Code source code suspected to have been leaked via NPM and has been uploaded to GitHub for backup

MeNews · 2026-04-02T10:25:25+00:00

Intern researcher at Web3 security company FuzzLand states that Anthropic's Claude Code source code appears to have been leaked through the NPM registry, with related files uploaded to GitHub, containing undisclosed feature hints and TODO comments. Anthropic has not responded to this matter yet.

MeNews

2026-04-02 10:25:25

Abstract generation in progress

ME News reports that on March 31 (UTC+8), Web3 security and analytics company FuzzLand intern researcher Chaofan Shou posted on X that the source code of Anthropic’s terminal development tool Claude Code appears to have leaked via map files in its NPM registry, and the related archive package has been publicly downloaded. Netizens say someone has already backed up the full code and uploaded it to a GitHub repository called “claude-code,” and shared that it contains a large number of TODO comments and hints about undisclosed features. There is currently no evidence that the repository or archive package was authorized by Anthropic officials, and Anthropic has not yet publicly responded to the suspected leak incident. (Source: X platform)

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