AiVibeIEC 62443 Foundational Requirements (FR)
The IEC 62443 foundational requirements are seven categories that structure all technical security requirements for industrial control systems, from identification and authentication through to resource availability.
IEC 62443 groups its technical security requirements under seven foundational requirements (FR): identification and authentication control, use control, system integrity, data confidentiality, restricted data flow, timely response to events and resource availability. Each FR is broken down into detailed system requirements in IEC 62443-3-3 and component requirements in IEC 62443-4-2, with requirement enhancements that apply at higher security levels.
The FRs give asset owners, integrators and suppliers a shared structure for specifying and assessing security. Identification and authentication control covers who or what can access the system; use control covers what an authenticated user may do; system integrity protects against unauthorised manipulation; data confidentiality protects information in transit and at rest; restricted data flow covers segmentation into zones and conduits; timely response to events covers logging and incident response; and resource availability covers resilience against denial of service and the ability to back up and recover.
Because requirements are organised by FR, a security level can be stated per requirement area, for example a high level for integrity and availability but a lower one for confidentiality where process data is not sensitive. Mapping existing controls to the seven FRs is a practical way to perform gap analysis against IEC 62443 and to compare supplier products during procurement.
Key points
- FR 1 identification and authentication control; FR 2 use control; FR 3 system integrity
- FR 4 data confidentiality; FR 5 restricted data flow; FR 6 timely response to events
- FR 7 resource availability covers resilience, backup and recovery
- Detailed in IEC 62443-3-3 for systems and IEC 62443-4-2 for components
Where AiVibe comes in
In AiVibe's AiAmbA AI Factory, the AiAmbA IoT edge layer keeps writes to machines deny-by-default and AI agents only propose changes that a trained operator confirms. AiVibe's security services include vulnerability assessment and penetration testing, and AiVibe is ISO/IEC 27001:2022 certified.
Related terms
- IEC 62443 (ISA/IEC 62443)OT & Industrial Cybersecurity
- IEC 62443-3-3 System Security RequirementsOT & Industrial Cybersecurity
- IEC 62443-4-2 Component Security RequirementsOT & Industrial Cybersecurity
- IEC 62443 Security Levels (SL)OT & Industrial Cybersecurity
- Zones and ConduitsOT & Industrial Cybersecurity