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Hackers Are Posting the Claude Code Leak With Bonus Malware

Anthropic's accidentally leaked Claude Code source became a supply chain attack vector when threat actors reposted it on GitHub with embedded infostealer malware, forcing the company to issue 8,000+ copyright takedowns.

Saturday, April 4, 2026 12:00 PM UTC2 MIN READSOURCE: WIRED AIBY sys://pipeline

Anthropic accidentally exposed the Claude Code source code publicly, triggering a wave of GitHub reposts — some laced with infostealer malware. Anthropic issued copyright takedowns to remove copies, narrowing from 8,000 repositories down to 96. This follows a March incident where fake Claude Code install guides served malware via Google sponsored ads.

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