Cybersecurity Risk Management of SISs

This chapter provides a deep dive into the critical domain of risk assessment specifically tailored for Safety Instrumented Systems (SISs). As foundational components in our Industrial Control Systems (ICSs), securing SISs is paramount to the safe and uninterrupted operation of mission critical systems.

In this chapter, we will unravel the complexities of conducting a comprehensive, systematic, and methodical ICS and SIS cybersecurity risk assessment. We will highlight the significance of identifying assets, understanding potential threats and vulnerabilities, calculating impact values, and ultimately establishing the risk associated with process safety operations. This process provides vital insights that guide an organization’s cybersecurity strategy and decision-making.

We also intend to illuminate the important distinction between general IT risk assessments and those specifically designed for SISs within the ICS context. This...