OT Security All-in-One, Volume 4: Ransomware Resilience, Recovery, and AI Risk: Incident Response, Cyber Manual Fallback, Digital Twins, Critical Infrastructure Continuity

Prevention fails. Volume 4 is about what happens next.The final volume of the OT Security All-in-One series walks the full arc of an industrial cyber crisis: ransomware with operational consequences, the first twenty-four hours, control-room escalation and decision rights, isolation without unsafe shutdown, and communications to the board, the regulator, and the public. Then recovery that actually works - OT backups and golden images, clean-room rebuilds, manual and degraded-mode operation, recovery-time objectives, cyber-recovery vaults - and the frontier: industrial AI governance, digital twins, autonomous response, and a 2030 resilience roadmap.38 chapters, closing with a master practitioner exam spanning all four volumes. Includes the first-24-hours checklist, the isolate-or-keep-running decision tree, recovery confidence scoring, references, and a full index.Read it before you need it; in a crisis there is no time to read at all. Protect the plant. Prove the control. Survive the outage.