Zero Trust for Operational Technology : Department of Defense , November 18 , 2025
Zero Trust for Operational Technology : Department of Defense , November 18 , 2025
From the document: "The Department of War (DoW) Chief Information Officer (CIO) established the Zero Trust (ZT) Portfolio Management Office (PfMO) to coordinate, synchronize, and accelerate adoption of ZT architecture and cybersecurity framework across the DoW enterprise. The ZT security model transitions away from trusted networks, actors, and devices to an environment with continuous authentication and fine-grained policy enforcement. In July 2025, the Department issued DTM 25-003, “Implementing the DoD Zero Trust Strategy,” which directs DoW Components to achieve, at minimum, Target Level ZT across all unclassified and classified systems (including national security systems) and control systems/Operational Technology (OT).
The following ZT guidance is underpinned by DoW policy and authoritative guidance (e.g., DoDI 8500 Series, DoD CSRA, DoD Control Systems SRG and RMF control systems overlays) [1], the adoption of NIST (e.g., NIST 800-82 rev3). This guidance represents authoritative Department guidance pertaining to ZT for OT and Control Systems and is expected to be implemented in addition to all existing cybersecurity requirements. Any questions on this guidance should be raised to the DoW CIO ZT PfMO at osd.pentagon.dod-cio.mbx.zt-pfmo@mail.mil."
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