N.S.A. Lost Access to Powerful A.I. Model Amid Anthropic Dispute

N.S.A. Lost Access to Powerful A.I. Model Amid Anthropic Dispute

https://www.nytimes.com/2026/06/23/us/politics/nsa-lost-access-anthropic-tool.html

Publish Date: 2026-06-24 11:08:00

Source Domain: www.nytimes.com

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Using an unordered list, summarize the following article with between 4 and 8 key points. The National Security Agency has lost access to a powerful A.I. model developed by Anthropic amid the Trump administration’s brawl with the start-up, U.S. officials said, depriving the intelligence agency of a tool that has impressed and alarmed its analysts with how good it is at finding software weaknesses.This month the Trump administration imposed export controls on Anthropic, citing national security concerns. That action forced Anthropic to pull back the release of its most advanced models, known as Mythos 5 and Fable 5.The N.S.A.’s cybersecurity analysts had been testing versions of Anthropic’s tools when the latest models were unplugged.The controlled tests proved impressive even within the halls of the N.S.A., a secretive fortress outside Washington that specializes in developing digital espionage techniques against foreign adversaries and protecting U.S. networks from cyberattacks.The power of Anthropic’s tools, and their importance to the N.S.A., were highlighted in a congressional hearing this month that underscored the administration’s increasing reliance on the most advanced A.I. systems for cybersecurity even as it battles a leading U.S. developer.During the session, Senator Mark Warner, the top Democrat on the Intelligence Committee, said that the N.S.A. chief, Gen. Joshua Rudd, had informed him that Mythos “broke into almost all of our classified systems, not in weeks, but in hours.” The comments attracted considerable attention after The Economist cited them in a report.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe.