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IEC 62443-2-4 Ed. 1.0 b:2015 - Security for industrial automation and control systems - Part 2-4: Security program requirements for IACS service providers
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CAN/CSA IEC 62443-2-4-17/A1-20 (R2022) - Amendment 1:2020 to CAN/CSA-IEC 62443-2-4:17, Security for industrial automation and control systems - Part 2-4: Security program requirements for IACS service providers (Adopted amendment 1:2017 to IEC
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ANSI/ISA 62443-2-4-2018 / IEC 62443-2-4:2015+AMD1:2017 CSV - Security for industrial automation and control systems, Part 2-4: Security program requirements for IACS service providers (IEC 62443-2-4:2015+AMD1:2017 CSV, IDT)
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IEC 62443: The International Series of Standards for Cybersecurity in Industrial Automation - Part 2/2
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