NIST seeks comment on 186-page OT incident response practice guide

NIST's National Cybersecurity Center of Excellence has been running this manufacturing-sector project for roughly three years, and the May 21 draft is the culmination: a full practice guide with reference architectures, scenario walkthroughs, and concrete implementation instructions drawn from 11 industry collaborators.

The three functional scenarios the guide covers are representative of the OT threat landscape rather than exhaustive: a compromise through a human machine interface or operator console, a data exfiltration event, and an unauthorized command message injected into an ICS environment. For each, NIST walks through detection, response execution, and recovery sequencing using commercially available technologies. Appendix C gets specific, with build instructions tied to individual collaborator tooling.

The broader framing is convergence risk. As OT systems are increasingly networked alongside IT infrastructure, the incident response playbooks that work for enterprise IT don't map cleanly onto factory floors where availability and safety constraints dominate. The guide is aimed at manufacturers operating ICS environments who need response and recovery plans that account for those constraints.

Who should read this. Compliance leads at Tier-1 and Tier-2 defense manufacturers with covered OT environments will find the scenario walkthroughs directly applicable. The guide also maps to NIST SP 800-82 (OT security) and the broader 800-171/172 family to the extent CUI flows through or adjacent to these ICS environments. If your organization is mid-way through an 800-171 assessment and has factory-floor assets in scope, the Appendix C implementation details are worth the read before the comment window closes.

The July 8 deadline is close. The guide is available on the CSRC site; the comment template is the standard NIST public-comment format.