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INDUSTRY 4.0/IIoT


The cyber resilience of machinery and systems must be optimised


3. IEC 62443-3-2 - establishes


requirements for defining an IACS system, partitioning a system under consideration (SUC) into zones and conduits, assessing the risk for each zone and conduit and establishing their respective target security levels. 4. IEC 62443-3-3 - defines system security


requirements applicable to automation systems and networks. 5. IEC 62443-4-1 - describes the product


development life cycle requirement related to the cyber security of products intended for use in the IACS environment. Specific aspects of the product life cycle addressed in the standard include security requirements definition, secure design, secure implementation, verification and validation, defect management, patch management and product end-of-life considerations. 6. IEC 62443-4-2 – applies the security


requirements and security levels presented in IEC 62443-3-3 to the components that constitute an IACS, such as embedded devices, network components, host


components and software applications. The intent of the standard is to specify the component security capabilities required to mitigate threats for a given security level without compensating countermeasures. For asset owners, these six standards


provide the foundation for an effective IACS cyber security management system, as well as a path for identifying future vulnerabilities


and implementing security improvements as required. The holistic approach presented in the IEC 62443 series therefore provides a robust and comprehensive cybersecurity solution for industrial organisations seeking to leverage the full potential of Industry 4.0 technologies while minimising their risk.


TÜV SÜD www.tuvsud.com/uk


SEPTEMBER 2022 | PROCESS & CONTROL 25


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