NSA/CISA publish MCP Security Design guidance for agent deployments

U.S. Department of Defense / CISA·medium signal

A joint government cybersecurity information sheet on Model Context Protocol security was published, formalizing design guidance for authentication, server trust, and supply-chain controls around MCP. Government codification of MCP hardening is a leading indicator that enterprise procurement will start demanding documented MCP security posture. Teams shipping MCP servers should map their controls to this guidance now to stay ahead of compliance asks.