Anthropic Report Alleges Alibaba, Moonshot AI, and DeepSeek Stole AI Models via Distillation Attacks
Summarized by AI from reporting by TechCrunch AI, published under our editorial policy.
Anthropic released a report on September 10, 2026, detailing persistent AI model distillation attacks by China-based companies Alibaba, Moonshot AI, and DeepSeek. The report claims these unauthorized campaigns have escalated in recent months as AI competition intensifies.

Key takeaways
- Anthropic's September 10, 2026 report alleges persistent AI model distillation attacks by Alibaba, Moonshot AI, and DeepSeek.
- Model distillation becomes unauthorized when performed without the original model owner's permission, effectively stealing the model's capabilities.
- The report states that these distillation campaigns have escalated in frequency and sophistication as AI competition has intensified.
Anthropic, a leading AI company, released a report on September 10, 2026, alleging persistent AI model distillation attacks by China-based companies Alibaba, Moonshot AI, and DeepSeek. The report claims these unauthorized distillation campaigns have escalated in recent months as competition in the AI space has intensified.
How Model Distillation Works and When It Becomes Theft
Model distillation is a technique where a smaller AI model is trained to mimic the behavior of a larger, more complex model. This can be done legally for efficiency or cost savings, but it becomes unauthorized when performed without the original model owner's permission, effectively stealing the model's capabilities. Anthropic's report alleges that the Chinese companies engaged in unauthorized distillation, using the stolen models to gain a competitive edge.
Evidence of Distillation Campaigns from Alibaba, Moonshot AI, and DeepSeek
Anthropic's report provides detailed evidence of these distillation campaigns, including specific instances where their models were replicated without consent. The report highlights that these attacks have become more frequent and sophisticated, using advanced techniques to bypass security measures. The companies named—Alibaba, Moonshot AI, and DeepSeek—are among the largest and most competitive in the Chinese AI market.
Why This Matters for AI Users and the Industry
This issue affects everyone because it undermines trust and security in AI technologies. If companies can steal and replicate models without consequences, it stifles innovation and could lead to a proliferation of low-quality, untrusted AI services. For consumers, this means potential security risks and a lack of reliability in the AI tools they use daily.
How to Choose Trusted AI Services
To ensure you're using trusted AI services, stick to well-known, reputable companies. Check the origins of any AI tools you use and verify their transparency and security practices. If you're using AI services from Alibaba, Moonshot AI, or DeepSeek, consider switching to alternatives like Anthropic's Claude or other verified providers.
Frequently asked
- What is model distillation?
- Model distillation is a technique where a smaller AI model is trained to mimic the behavior of a larger, more complex model. It can be done legally for efficiency but becomes unauthorized when performed without the original model owner's permission.
- Which companies does Anthropic's report accuse of unauthorized distillation?
- Anthropic's report names Alibaba, Moonshot AI, and DeepSeek as the companies engaged in persistent distillation attacks.
- How can I tell if an AI service uses stolen models?
- The source does not provide a method for end users to detect stolen models. It recommends sticking to well-known, reputable AI companies and verifying the transparency and security practices of any AI tools you use.