Functional Safety Versus OT Cybersecurity

For decades, functional safety and OT cybersecurity evolved as separate disciplines – different teams, different standards, different mindsets. That divide is no longer a luxury industry can afford.

Functional Safety Versus OT Cybersecurity confronts the critical convergence head-on, guiding engineers, safety professionals, and security practitioners through the complex intersection of IEC 61511, IEC 62443, and the methodologies that bridge them. From traditional HAZOP and SIL assessments to the emerging Cyber HAZOP (CHAZOP) framework, this book delivers a unified approach to risk that reflects the reality of today’s cyber-physical threat landscape.

Explore how adversaries can weaponize safety instrumented systems, why vulnerability management must now be a lifecycle discipline, and how human factors remain the most unpredictable variable in any secure safety program. Real-world case studies expose hard lessons from facilities where the boundary between a process hazard and a cyberattack simply ceased to exist.