Overview
IEC 62443-2-1:2010 specifies the elements required to establish a Cyber Security Management System (CSMS) for Industrial Automation and Control Systems (IACS). Part of the IEC 62443 series on industrial communication networks and network/system security, this standard is primarily focused on policy, procedures, practices and personnel elements of IACS security and provides guidance on developing and maintaining those elements. It aligns with the broad IACS scope described in IEC/TS 62443-1-1 and includes informative annexes with guidance, a CSMS development process, and a mapping to ISO/IEC 27001.
Key topics and requirements
IEC 62443-2-1 structures CSMS requirements across a lifecycle and includes these core categories:
- Risk analysis
- Business rationale, asset identification, risk identification, classification and assessment.
- Addressing risk through the CSMS
- Security policy, organization and awareness (scope, responsibilities, staff training, business continuity).
- Selected security countermeasures (examples include network segmentation, access control - account administration, authentication, authorization - physical/environmental security).
- Implementation (risk management, system development & maintenance, document management, incident planning & response).
- Monitoring and continuous improvement
- Conformance, review, and ongoing CSMS maintenance.
The standard contains detailed requirement tables (e.g., Tables 3–19) and lifecycle models, plus illustrative figures and examples to help map security levels, zone architectures and implementation steps.
Practical applications
IEC 62443-2-1 is used to:
- Establish or mature an OT/ICS-focused CSMS that addresses unique operational availability and safety constraints.
- Guide risk assessments and specify organizational controls, policies, and incident response tailored to IACS.
- Provide a structured approach to integrating technical countermeasures (network segmentation, access controls) with organizational processes.
- Support compliance and conformance efforts by mapping CSMS elements to ISO/IEC 27001 controls (see Annex C).
Who should use this standard
- IACS owners/operators (utilities, manufacturing, energy, water).
- OT/SCADA/ICS engineers and control system integrators.
- Cybersecurity managers, compliance officers and auditors working in operational technology (OT).
- Security consultants and vendors implementing CSMS, policies or defense-in-depth architectures.
Related standards
- IEC/TS 62443-1-1 (IACS terminology & concepts)
- Other parts of the IEC 62443 series (technical and product-level requirements)
- ISO/IEC 27001 (information security management) - Annex C provides a mapping between IEC 62443-2-1 and ISO/IEC 27001.
Keywords: IEC 62443-2-1, CSMS, IACS security, industrial control systems security, OT security, SCADA security, network and system security.
Open preview (PDF)Industrial communication networks - Network and system security - Part 2-1: Establishing an industrial automation and control system security program
