csrc.nist.govpaper

NIST SP 800-82 Rev.4 (Initial Public Draft) — Guide to OT Security

NIST SP 800-82 Revision 4 is the initial public draft of the agency's core guide to Operational Technology (OT) security, covering industrial control systems, building automation, physical access control, and environmental monitoring/measurement systems. It updates OT threat models, typical topologies, and vulnerability descriptions, and provides recommended security safeguards and countermeasures for organizations running cyber-physical systems, with a public comment period through November 30, 2026.