Episode 51 — Use Failure Mode and Criticality Thinking: Safety, Reliability, and Cascading Effects

This episode teaches failure mode and criticality thinking in OT as a practical way to predict how small faults become large incidents, which is essential for SecOT+ questions that revolve around safe prioritization under uncertainty. You’ll learn how to break a system into components, identify plausible failure modes, and connect each failure to effects on safety, reliability, product quality, and recoverability, with special attention to cascading effects across shared power, shared networks, shared credentials, and shared engineering tooling. We also cover how cyber conditions can mimic or trigger classic failure modes, such as integrity loss appearing as sensor drift, availability loss appearing as intermittent comms failures, or unauthorized writes appearing as “mysterious” configuration changes. You’ll practice applying criticality logic to decide what gets protected first, what must be monitored continuously, and what can be deferred to maintenance windows, all while documenting assumptions and evidence. By the end, you’ll be able to choose mitigations that reduce both operational and security risk without creating new hazards through disruptive testing or rushed changes. 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.