# IEC 62443-3-3

Standards · `IEC 62443-3-3` · verification: source checked

IEC 62443-3-3:2013 is an international standard in the Industrial communication networks - Network and system security series, Part 3-3: System security requirements and security levels. It provides detailed technical control system requirements (SRs) tied to the seven foundational requirements (FRs) described in IEC 62443-1-1, and defines requirements for control system capability security levels, SL-C. These are used with defined zones and conduits for the system under consideration (SuC) to develop the target SL, SL-T, for a specific asset.

## Specification

| Property | Value |
|---|---|
| Body | IEC |
| Reference | IEC 62443-3-3 |
| Edition year | 2013 |

## Study notes

- Publication date 2013-08-07; edition 1.0.
- The contents of the corrigendum of April 2014 are included in this copy; IEC 62443-3-3:2013/COR1:2014 is edition 1.0, dated 2014-04-24, status Valid.
- Technical committee: TC 65 Industrial-process measurement, control and automation.
- Publication type: International Standard; category: Information security and data privacy.
- ICS 25.040.40 and 35.110; ISBN 9782832264225; 80 pages; file size 2.43 MB.
- Stability date 2027.
- Seven foundational requirements (FRs) are described in IEC 62443-1-1.
- Requirements are applied to zones and conduits defined for the system under consideration (SuC).
- ISA publishes the identical edition under the naming convention ISA-62443-x-y; IEC editions appear as IEC 62443-x-y.

## Sources

1. [ISA/IEC 62443 Series of Standards - ISA](https://www.isa.org/standards-and-publications/isa-standards/isa-iec-62443-series-of-standards) (accessed 2026-10-25)
2. [IEC 62443-3-3:2013](https://webstore.iec.ch/en/publication/7033) (accessed 2026-10-25)

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