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# NSA Lost Access to Anthropic's AI After Red-Team Tests
- URL: https://adjacent.media/signals/nsa-lost-access-to-anthropics-ai-after-red-team-tests/
- Published: 2026-06-24T16:11:55.000Z
- Updated: 2026-06-24T16:11:55.000Z
- Description: The NSA was actively security-testing Claude 5 against classified systems when Anthropic cut off government access. This demonstrates how national security agencies now depend on frontier AI models for vulnerability discovery, and how quickly that relationship can fracture over policy disputes.
- Author: Jonathan Greene
- Tags: #signal, theme-ai, model capability, safety testing, government access

Source: [The New York Times](https://www.nytimes.com/2026/06/23/us/politics/nsa-lost-access-anthropic-tool.html?unlocked%5Farticle%5Fcode=1.sVA.Xgol.aUCRzN6jvdv-&smid=nytcore-ios-share&ref=adjacent.media)

The NSA was actively security-testing Claude 5 against classified systems when Anthropic cut off government access. This demonstrates how national security agencies now depend on frontier AI models for vulnerability discovery, and how quickly that relationship can fracture over policy disputes. The tests allegedly identified actual flaws in classified infrastructure, meaning the government's AI adoption is no longer theoretical: intelligence agencies are already building operational workflows around third-party model access, making supply chain disruptions a genuine security concern rather than a vendor negotiation tactic.