ISA/IEC 62443
The series of standards that defines requirements and processes for securing industrial automation and control systems, addressed to asset owners, integrators, service providers, and product suppliers.
The network analogy
A security framework for OT that covers both the program and the products, organized around zones of assets and the conduits between them.
Why it matters for wireless
Its scope includes the communications networks attached to industrial control systems, so a wireless link carrying control traffic sits inside it, along with its encryption and access control.
ISA says the series defines requirements and processes for implementing and maintaining electronically secure IACS for asset owners, product suppliers, integrators, and service suppliers. NIST notes it grew out of ISA99 and is organized into four categories: General, Policies and Procedures, System, and Component. Its terminology part includes a zone and conduit model for grouping assets.
For wireless, NIST’s OT guide adds that encryption must not degrade the operational performance of the end devices. Security and timing have to be designed together.
About this page
Built from 3 sources: 3 standards bodies and labs. Researched and drafted with AI assistance, then reviewed and approved by Ben Rutter on . How pages are made
- First published
- Last updated
Cite this page
Plain
Ben Rutter. "ISA/IEC 62443." OT Wireless, published October 5, 2026. https://otwireless.com/glossary/iec-62443/
APA 7
Rutter, B. (2026, October 5). ISA/IEC 62443. OT Wireless. https://otwireless.com/glossary/iec-62443/
BibTeX
@misc{rutter2026iec62443,
author = {Rutter, Ben},
title = {{ISA/IEC 62443}},
year = {2026},
howpublished = {\url{https://otwireless.com/glossary/iec-62443/}},
organization = {OT Wireless},
}