The ISA/IEC 62443 standard is a globally recognized cybersecurity framework designed to protect industrial control systems (ICS) and operational technology (OT) from cyber threats. It provides best practices for securing automation networks and industrial assets.

This standard defines security requirements for different stakeholders, including asset owners, system integrators, and product suppliers. It covers network segmentation, access control, risk assessment, and continuous monitoring to ensure resilient industrial environments.

ISA/IEC 62443 is widely adopted across critical infrastructure sectors such as manufacturing, energy, and transportation. Compliance with this standard helps organizations mitigate cyber risks, improve security postures, and ensure regulatory adherence.