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Application & OT Security · Advanced

IEC 62443 Foundational Requirements (FR)

The seven groups of security requirements in IEC 62443 against which systems and components are assessed.

Definition

They are 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 and FR 7 Resource availability. System (62443-3-3) and component (62443-4-2) requirements are organized under them per security level.

Example

Segmenting zones with conduits satisfies requirements under FR 5 Restricted data flow.

Exam tip

Seven FRs; FR 5 maps to segmentation, FR 7 to availability.

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