Episode 40 — Measure OT Security With Purpose: Metrics, Measures, and What They Really Signal

This episode teaches how to measure OT security in a way that supports decisions, because poor metrics create false confidence, misdirect resources, and frustrate operations with reporting that does not reflect reality. You’ll learn the difference between metrics and measures, and why the most useful indicators tie directly to risk reduction, such as improved asset visibility, reduced unmanaged access paths, stronger segmentation enforcement, and faster detection of abnormal control traffic. We explain the traps of vanity metrics, like counting policies or training completions without confirming behavior change, and we show how to design measures that can be validated with evidence and repeated over time. The episode includes practical examples of OT-appropriate measurements, such as coverage of passive monitoring, completion and quality of access reviews, backup integrity test results, mean time to identify and isolate issues, and exception counts with documented approvals. You’ll also learn how to interpret what metrics really signal, including when improvements reflect genuine maturity versus when they reflect tooling changes, scope changes, or data quality shifts that must be explained to maintain trust. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.