IEC 62443-3-2:2020

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.