Fri. Apr 3rd, 2026

Claude AI Code Massively Leaked Due to Human Error

Contrary to initial speculation, the recent massive code leak for Claude AI was not the work of Russian actors, nor was it an industrial espionage operation. The incident was, in fact, caused by a simple human oversight: a file was inadvertently included in an npm package.

On March 31st, during the publication of version 2.1.88 of “Claude Code” to the npm registry, Anthropic’s development teams mistakenly omitted to secure a critical file, leading to its public exposure.

By Rupert Blackwood

Investigative journalist based in Sheffield, focusing on technology's impact on society. Rupert specializes in cybercrime's effect on communities, from online fraud targeting elderly residents to cryptocurrency scams. His reporting examines social media manipulation, digital surveillance, and how criminal networks operate in cyberspace. With expertise in computer systems, he connects technical complexity with real-world consequences for ordinary people

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