IEC 62443-3-3:2013

IEC 62443-3-3:2013 defines system security requirements and security levels for industrial communication networks, making it a relevant reference for organizations assessing control-system cyber security. It is commonly used during technical review, risk management, and conformity assessment activities where security functions must be documented and verified. As a primary technical document, IEC 62443-3-3:2013 helps teams align engineering decisions, procurement checks, and compliance workflows around a clear security baseline for industrial systems.

What is IEC 62443-3-3:2013?

IEC 62443-3-3:2013 is the part of the IEC 62443 series that addresses system security requirements and security levels for industrial automation and control environments. Its scope is typically used to structure security expectations at the system level, supporting documented evaluation and technical validation of industrial communication networks. For engineering and compliance teams, it provides a practical reference for defining, reviewing, and testing security measures in a way that is consistent with system requirements and operational constraints.

Applications of IEC 62443-3-3:2013

This document is often used in industrial control system projects, automation engineering, and security-focused procurement reviews where system-level requirements must be specified and checked. It can support technical assessment in environments such as plant control networks, process automation architectures, and other industrial communication setups that require controlled access and security verification. Laboratories, integrators, and asset owners may also use it to organize testing workflows, compare security claims, and prepare compliance documentation for internal or external review.

Why is IEC 62443-3-3:2013 important?

The value of IEC 62443-3-3:2013 lies in its ability to turn industrial cyber security expectations into a structured reference for implementation and verification. That helps reduce ambiguity during engineering specification, supports operational consistency across systems, and improves the quality of testing and validation activities. It is also useful for procurement and conformity assessment preparation, since clearly defined security levels and requirements can simplify supplier evaluation, documentation checks, and risk reduction decisions.

• System security requirements for industrial communication networks
• Security levels used to structure technical evaluation and validation
• Support for engineering documentation and compliance workflows
• Useful reference for testing consistency and procurement review