Security for industrial automation and control systems - Part 3-2: Security risk assessment for system design

IEC 62443-3-2:2020 establishes requirements for:• defining a system under consideration (SUC) for an industrial automation and control system (IACS). • partitioning the SUC into zones and conduits. • assessing risk for each zone and conduit. • establishing the target security level (SL-T) for each zone and conduit; and• documenting the security requirements.