The Information Machine
Following·Day 4·first covered 22 Sep 2026·7 sources

China's CAC Probes DeepSeek and Moonshot Over Routing Data to Claude

The gist

The investigation puts two prominent Chinese AI labs under domestic regulatory scrutiny for allegedly exposing sensitive Chinese user data, including state and military information, to a foreign model. Anthropic's role as the source of detailed evidence supporting the allegations is described by one outlet as the first instance a US AI firm provided such evidence to back claims of this kind.

The full picture

China's Cyberspace Administration of China (CAC) is investigating DeepSeek and Moonshot AI following allegations from Anthropic that both companies secretly routed millions of user requests to Claude and used the responses as training data for their own models, a practice Anthropic calls illicit distillation. The CAC initially summoned representatives from seven companies named in the original report, including Alibaba, Zhipu, SenseTime, MiniMax, and Xiaomi alongside DeepSeek and Moonshot, but has since narrowed its focus to DeepSeek and Moonshot specifically. Anthropic alleges Moonshot sent over 23 million requests to Claude between May and July, and DeepSeek sent 12.1 million over a 14-day period in July. The routed prompts allegedly contained names, email addresses, company data, and information from state-affiliated actors, including data from engineers building a case system for a Chinese police bureau. The probe is ongoing and no penalties have been announced.

How it developed
25 September 2026

Second report confirms China's internet regulator launched the investigation following Anthropic's allegation

24 September 2026

Report describes China investigating DeepSeek and Moonshot AI for routing sensitive user data to Anthropic's Claude as part of a distillation attack

22 September 2026

CAC investigation into DeepSeek and Moonshot reported; CAC initially summoned representatives from seven companies

Sources
2 more sources
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