Alibaba's Claude Ban
Alibaba Bans Claude Code Across Offices Amid Claims of Massive AI Data Theft and Security Risks
Key Points
Anthropic's complaint states that the distillation attack against Claude ran from April 22 to June 5, 2026 and involved more than 28.8 million exchanges with Claude via almost 25,000 fraudulent accounts, with operators affiliated with Alibaba and Alibaba Qwen.
Anthropic's June 10 letter to U.S. Senators Tim Scott and Elizabeth Warren called the operation the 'largest distillation attack in history' and described Alibaba-linked operators as responsible for illicitly harvesting Claude's capabilities, urging action to curb such campaigns.
The move to ban Claude Code was reported as having come after Yicai coverage; CNBC notes that the ban was previously disclosed by the Chinese outlet before wider publication.
Alibaba's stock traded around 96.1 dollars as part of a broader slide tied to insider selling and legal troubles related to AI security concerns.
Alibaba plans to ban employees from using Anthropic's Claude Code starting July 10, citing concerns about embedded backdoors and security risks, according to MarketScreener. The ban follows explosive accusations from Anthropic that Alibaba secretly harvested Claude's capabilities to train its own rival AI models.
Anthropic called the operation the 'largest distillation attack in history.' The U.S. AI company says Alibaba-linked operators ran more than 28.8 million exchanges with Claude through nearly 25,000 fake accounts between April 22 and June 5, 2026.
Alibaba Places Claude Code on High-Risk List
Alibaba has added Claude Code to an internal high-risk software list, according to MarketScreener. Office workers will lose access on the July 10 deadline. The ban covers workspace environments across Alibaba's offices. The move was first reported by Chinese outlet Yicai before gaining wider attention, TradingView notes.
The trigger was a Reddit post claiming that a version of Claude Code released in April contained hidden backdoors. Alibaba has not publicly confirmed the backdoor allegations. But the company moved quickly, placing the tool on its restricted list before the ban takes full effect.
Anthropic Accuses Alibaba of Stealing Claude's Intelligence
Anthropic fired back with serious legal and political allegations. In a June 10 letter to U.S. Senators Tim Scott and Elizabeth Warren, Anthropic accused Alibaba and Alibaba Qwen of running a massive data-theft campaign. The operation involved nearly 25,000 fraudulent accounts generating 28.8 million exchanges with Claude over 45 days.
The goal, Anthropic says, was 'distillation' — a technique where one AI learns by copying the outputs of another. By doing this at such a large scale, Alibaba allegedly stole the core intelligence built into Claude without paying for it. Anthropic urged senators to take action to stop similar campaigns in the future.
Big Banks and Tech Giants Already Pulling Back From Claude
Alibaba is not alone in restricting Claude. Meta, Goldman Sachs, and JPMorgan have all moved to limit employee access to Claude and related AI tools, according to MarketScreener. The pullbacks reflect growing anxiety among large companies over AI security risks and data exposure.
U.S.-China tensions over AI are driving much of the concern. Governments and corporations are increasingly treating AI tools as potential security vulnerabilities. The Claude Code ban fits into a broader pattern of tech companies drawing harder lines around which AI tools employees can use.
Alibaba Stock Slides as AI Security Troubles Mount
Alibaba's stock traded around $96.10 as the news spread, part of a broader decline tied to the AI security controversy, according to TradingView. Investor concern has grown around Alibaba's AI strategy and its legal exposure from Anthropic's distillation allegations.
Insider selling has added to the pressure on shares. The combination of legal troubles, regulatory scrutiny, and a high-profile security ban has made Alibaba's AI ambitions a liability in the eyes of some investors. The July 10 deadline will be a key moment to watch for any further company response.
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