Anthropic, the company built on AI safety, now has roughly six engineers embedded inside the National Security Agency, helping deploy an AI model for offensive cyber operations. The model, named Mythos, is already running on classified networks.
Here's the paradox: the Department of Defense, which oversees the NSA, classified Anthropic as a “supply chain risk” as of March 2026 and is pursuing legal action against the company. Yet the agency is simultaneously relying on Anthropic's personnel to operate one of its most advanced cyber tools.
What Mythos Does
Mythos is an AI system built for finding and exploiting software vulnerabilities. Early NSA testing focused on identifying flaws in Microsoft products. The model can discover security holes in widely used software faster than human analysts.
The tool has since been extended to 150 organizations across 15 countries. The NSA is running “Mythos Preview” on its classified networks, primarily for cybersecurity tasks.
Why Blockchain and Crypto Should Pay Attention
Industry analysts say Mythos's capabilities are forcing a reassessment of security practices across decentralized finance and blockchain systems. The shift is from smart-contract vulnerabilities toward infrastructure-level risks: key management, cross-chain bridges, and the underlying plumbing of blockchain ecosystems.
No specific cryptocurrencies or protocols have been directly linked to this collaboration. But security researchers in the blockchain space are already recalibrating their threat models.