Anthropic has formally accused Chinese technology conglomerate Alibaba of orchestrating the largest known distillation attack against its artificial intelligence infrastructure, prompting urgent appeals for new legislative safeguards. Between April 22 and June 5, operators affiliated with Alibaba allegedly generated approximately 28.8 million interactions with Claude models across nearly 25,000 fraudulent accounts to illicitly harvest system capabilities. The objective was to train Alibaba’s proprietary Qwen large language models without bearing the substantial research and development expenses required for domestic frontier AI development. In a June 10 correspondence to US Senators Tim Scott and Elizabeth Warren, Anthropic policy head Sarah Heck characterized the operation as systematic, industrial-scale espionage designed to accelerate Chinese AI capabilities to near-Claude levels while circumventing US export controls. Heck urged lawmakers to enact targeted restrictions limiting Chinese access to advanced American computing resources and to impose financial penalties on entities engaging in such data extraction. The disclosure intensifies ongoing technological and geopolitical friction between the United States and China. The accusation follows recent US regulatory actions, including export controls on Anthropic’s Fable 5 model that restrict foreign access citing national security concerns. Concurrently, Alibaba was added to a Pentagon blacklist designating Chinese firms with military ties, a move the company is actively contesting through litigation. Market reactions were immediate, with Alibaba’s share price declining more than four percent. Alibaba representatives have not yet commented on the allegations. The incident highlights growing concerns over intellectual property security and competitive imbalances in the global artificial intelligence landscape. As frontier models increasingly integrate into cybersecurity and software development, Anthropic’s warning underscores the urgent need for regulatory frameworks capable of addressing sophisticated AI exploitation and cross-border technology transfer risks.