What this book covers
Chapter 1, Introduction to Safety Instrumented Systems (SISs), lays the foundation by exploring what Safety Instrumented Systems (SISs) are and their crucial role in safeguarding industrial processes. We delve into the principles of functional safety, outlining key components, functions, and how SIS integrates with Industrial Control Systems (ICSs).
Chapter 2, SIS Evolution and Trends, traces the historical evolution of SIS, from early mechanical safeguards to modern electronic SIS. We also discuss emerging trends such as the convergence of IT and OT, the impact of new technologies, and the increasing adoption of integrated safety and control systems.
Chapter 3, SIS Security Design and Architecture, provides a comprehensive guide to designing and architecting SIS. Key topics include risk assessment, Safety Integrity Levels (SILs), redundancy models, and the integration of SIS with Distributed Control Systems (DCSs) and Programmable Logic Controllers (PLCs).
Chapter 4, Hacking Safety Instrumented Systems, is an eye-opening chapter in which we uncover the methods, tactics, and motivations of attackers targeting SISs. We analyze real-world case studies, explain common vulnerabilities, and discuss how cyberattacks can lead to catastrophic safety failures.
Chapter 5, Securing Safety Instrumented Systems, builds on the previous chapter and presents practical strategies and best practices to secure SISs. From network segmentation and anomaly detection to secure coding practices and incident response, this chapter offers a comprehensive approach to safeguarding critical safety systems.
Chapter 6, Cybersecurity Risk Management of SISs, delves into risk management, which is the cornerstone of effective SIS security. This chapter provides a systematic framework for identifying, assessing, and mitigating cybersecurity risks in SISs. We introduce risk assessment methodologies including HAZOP and LOPA and discuss how to prioritize controls based on their potential impact.
Chapter 7, Security Standards and Certification asserts, that compliance with standards and regulations is key to ensuring the safety and security of SIS. This chapter offers an overview of international standards including IEC 61511 and NIST 800-82, along with relevant legislation. We also provide practical guidance on implementing and adhering to these standards.
Chapter 8, The Future of ICS and SIS: Innovations and Challenges, is where we curate a comprehensive list of additional resources, including books, whitepapers, webinars, and industry organizations. These resources will help you deepen your understanding and stay updated on the latest trends in SIS security.
