IEC 62443-3-2:2020

IEC 62443-3-2:2020 addresses security for industrial automation and control systems with a focus on security risk assessment for system design. It is relevant when organizations need a structured way to evaluate cyber risks before or during system architecture decisions, especially where control-system availability, integrity, and operational continuity matter. For engineering, procurement, and compliance teams, IEC 62443-3-2:2020 can support a documented technical review and help align design decisions with risk management and conformity assessment workflows.

Purpose of IEC 62443-3-2:2020

The purpose of IEC 62443-3-2:2020 is to provide a systematic approach for security risk assessment within the design of industrial automation and control systems. It is generally used to identify relevant security concerns, determine risk treatment priorities, and inform design choices that support technical compliance. In practice, it can help teams translate security objectives into an engineering specification that is suitable for documented evaluation, verification activities, and more consistent operational planning across complex control environments.

Compliance applications of IEC 62443-3-2:2020

IEC 62443-3-2:2020 is commonly applied during system design reviews, security assessments, and procurement evaluations for industrial control environments. It may be used to support technical documentation for projects involving automation assets, control networks, and connected operational technology where risk reduction needs to be traceable. Laboratories, integrators, asset owners, and compliance teams can use it as a compliance reference when preparing evidence for technical validation, internal approvals, or regulatory preparation linked to security-focused system design.

Benefits of IEC 62443-3-2:2020

Using IEC 62443-3-2:2020 can improve consistency in security-related engineering decisions and reduce variation between project teams, suppliers, and assessment methods. It supports clearer risk-based prioritization, which can strengthen safety-related decision-making, interoperability planning, and quality assurance in complex industrial environments. For procurement and compliance workflows, it also helps create a more defensible basis for product evaluation, testing workflows, and conformity assessment preparation, especially when organizations need documented justification for design selections and security controls.

• Structured security risk assessment for industrial automation and control system design
• Useful for engineering documentation, technical review, and verification planning
• Supports compliance workflows, procurement checks, and conformity assessment preparation
• Relevant where operational continuity, system integrity, and risk reduction are design priorities