Anthropic · DeepSeek · Claude · China · Hong Kong · The Information · Decrypt
China Probes DeepSeek and Moonshot Over Alleged Data Leaks to Anthropic's Claude
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China is turning Anthropic's own leak-detection playbook back on two of its most prominent AI labs.
Key facts
- The session lands a day before President Donald Trump's September 24 summit with Xi Jinping, where AI is reportedly on the agenda
- The trigger was Anthropic's fourth threat intelligence report, a 154-page document published September 10
- For most of 2026, Anthropic has accused Chinese labs of stealing Claude's outputs to train cheaper rivals
- The Cyberspace Administration of China has opened an investigation into DeepSeek and Moonshot AI over claims that both companies secretly routed sensitive user data to Anthropic's servers
Summary
China's Cyberspace Administration summoned all seven companies named in Anthropic's September 10 report before narrowing its probe to DeepSeek and Moonshot specifically. Anthropic alleges Moonshot routed more than 23 million exchanges to Claude through 5,380 fraudulent accounts, while DeepSeek generated more than 12.1 million exchanges in a 14-day window in July. The timing is awkward for both firms: DeepSeek is briefing the UN Security Council on AI risks this week, and Moonshot filed confidentially for a $3 billion Hong Kong IPO. The Cyberspace Administration of China has opened an investigation into DeepSeek and Moonshot AI over claims that both companies secretly routed sensitive user data to Anthropic's servers, The Information reported Tuesday, citing people familiar with the matter.