The NSA (National Security Agency) is actively deploying Anthropic's Mythos Preview model, a specialized AI designed for computer security tasks, according to two sources familiar with the arrangement. This puts the intelligence agency in direct conflict with a Trump administration executive order from February 2026 that explicitly banned federal agencies from using Anthropic's services. The company released Mythos Preview in early April 2026, marketing it as exceptionally capable at cybersecurity operations - precisely the kind of work the NSA does every day. The context here is a months-long brawl between Anthropic and the Pentagon that started when the AI company refused to remove certain safety guardrails during military contract negotiations. Anthropic's position was simple: we built these models with specific ethical boundaries, and we're not stripping them out just because the Department of Defense wants unrestricted access. Trump's response was to designate Anthropic a supply chain risk and order a government-wide boycott. The company fought back with lawsuits in two separate courts in March 2026. The legal battle has produced mixed results. One federal court granted Anthropic a preliminary injunction temporarily blocking the supply chain risk designation. But another court denied the company's motion to lift the label entirely, leaving Anthropic in regulatory limbo. The Pentagon filed its own response defending the designation, setting up what could be years of litigation. Meanwhile, Anthropic CEO Dario Amodei showed up at the White House on April 17, 2026, for what officials later called a productive and constructive meeting with Chief of Staff Susie Wiles and other administration figures. The topic? Reportedly Mythos itself. When reporters asked Trump about the meeting, he claimed to have no idea it happened - a classic Trump move when something politically awkward is brewing. The NSA is apparently one of roughly 40 organizations Anthropic granted early access to Mythos Preview, and sources say the model is seeing expanding use within the Department of Defense more broadly. What makes this particularly messy is that the NSA, technically part of the Department of Defense, appears to be operating under a different playbook than the rest of the federal government. Either the intelligence community carved out an exception for itself, or the NSA decided that national security imperatives trump executive orders. Given the agency's track record of doing whatever it believes necessary for signals intelligence, the latter seems more likely. Anthropic's cybersecurity-focused AI is exactly the kind of tool the NSA would consider mission-critical, regardless of what political drama is unfolding in Washington.