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Alibaba to ban Claude Code in workplace over alleged backdoor risks, source says

Piatok 3. júla 2026 • Source: Reuters

What happened

Alibaba has added Anthropic's Claude Code to its internal list of banned software, prohibiting employees from using it in workplace environments from July 10, 2026. The story was originally reported by Chinese financial outlet Yicai and confirmed by Reuters on July 3, 2026.

Context and impact

Claude Code contained code that inspected user environments — including timezone and proxy settings — and inserted subtle markers into prompts sent to Anthropic's servers. An Anthropic employee explained on X that this was 'an experiment launched in March 2026' to prevent API abuse by unauthorized resellers and protect against model distillation. The ban arrives amid wider Alibaba-Anthropic tensions: Anthropic had previously accused Alibaba of illicitly extracting Claude model capabilities. The immediate impact is blocking the tool for 200K+ Alibaba employees; the longer-term implication is a new precedent for enterprise AI coding tool security reviews.

Details

Effective date: July 10, 2026
Classification: Alibaba labeled Claude Code 'high-risk software'
Mechanism: code inspected timezone, proxy info, and inserted markers into prompts
Anthropic's explanation: experiment since March 2026 to block API abuse and model distillation
Replacement tool: Alibaba's own Qoder platform
Background: Anthropic previously accused Alibaba of illicit Claude capability extraction

Open original source Reuters