Network segmentation is one of the most effective and foundational strategies in Operational Technology (OT) cybersecurity. It consists of logically or physically dividing an industrial network into smaller, isolated segments or zones. Each segment has its own level of trust and access permissions, allowing organizations to control traffic flows, limit exposure, and contain potential attacks before they spread across systems.

• Dividing a network into smaller, isolated segments or zones.
• Controls traffic flow between segments using firewalls or VLANs.
• Limits access to only necessary parts of the network.