Network segmentation in OT is a cybersecurity practice that separates industrial control systems (ICS) into different security zones to limit access and reduce the risk of cyberattacks. It follows models such as the Purdue Model for network segmentation.
By isolating operational technology (OT) from enterprise IT, organizations can prevent malware from spreading and ensure that only authorized devices communicate with critical systems. This is particularly important for securing SCADA, PLCs, and DCS networks in industrial environments.
With increasing threats targeting industrial sectors, network segmentation is a key cybersecurity measure that helps companies protect critical infrastructure, improve threat detection, and enhance regulatory compliance with standards like ISA/IEC 62443.