In a world where critical infrastructure has become the primary target of cyberattacks, industrial cybersecurity is no longer an option—it is a strategic imperative.

Synthesizing 27 years of hands-on expertise in IT/OT architecture, this comprehensive, structured, and operational reference book bridges the gap between strict regulatory requirements and on-the-ground operational reality. It provides the technical foundations, real-world attack analyses, international standards, and practical methods needed to secure ICS, SCADA, DCS, PLC, OT, and Industry 4.0 environments.

Written for engineers, technicians, IT/OT consultants, CISOs, and critical infrastructure operators, this extensive 750-page guide offers a clear, detailed, and immediately actionable vision of industrial cyber-resilience.

What you will learn in this book:

- Industrial systems explained simply: SCADA, ICS, DCS, PLC, HMI, and real-time networks. Understand their architectures, protocols, and vulnerabilities.

- Major OT cyberattacks analyzed in depth: Stuxnet, BlackEnergy, Triton/Trisis, and Colonial Pipeline. Understand how they work, what they compromised, and the critical lessons to be learned.

- Building a robust Defense-in-Depth: Network segmentation, zones & conduits, the Purdue model, industrial firewalls, OT IDS/IPS, endpoint hardening, whitelisting, access policies, and OT zero-trust.

- Mastering standards and frameworks: ISA/IEC 62443, NIST SP 800-82, the NIS 2 directive (requirements and resilience), ISO 27001/27019, and NERC CIP.

- Securing modern environments: IIoT, connected sensors, the industrial cloud, digital twins, virtualization, and Industry 4.0.

Your included field and assessment tools:

- Detailed case studies: Real-world industrial intrusion scenarios to help you understand attack mechanics and design appropriate remediation strategies.

- Self-assessment mini-quizzes: Quick built-in tests to validate your knowledge and technical skill acquisition as you read.

- Essential checklists for OT audits: Network security, PLCs, HMIs, access management, SCADA hardening, and physical security.

- Complete OT incident response playbook: Decision trees, containment, OT forensics, system restoration, crisis management, and emergency procedures.

Why is this book different? Unlike purely theoretical texts, this guide delivers concrete case studies, real-world architectures, immediately applicable procedures, validation quizzes, and a comprehensive analysis of modern regulatory standards. It is designed to be both an everyday operational tool and a definitive academic reference.

Whether you are an engineer, a decision-maker, or part of an organization subject to the NIS 2 directive, you will find all the keys you need to protect your industrial systems and strengthen your cyber-resilience.