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Anthropic Accidentally Releases Claude Code Source via Packaging Error

Anthropic confirmed it accidentally released ~500,000 lines of internal source code for Claude Code through a misconfigured software update, attributing the incident to human error rather than a security breach. The exposed code, quickly mirrored to GitHub, relates to Claude Code's internal architecture but does not include sensitive customer data, credentials, or the underlying Claude model weights. The incident generated significant social media attention (29M+ X views) though the code's value is limited given prior reverse-engineering and a similar February 2025 exposure.