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3. Strengthen segmentation and access control Industrial environments have historically prioritized reliability and uptime over security architecture and operated under the assumption of being air-gapped. As industrial processes digitalize, hybrid work, remote maintenance, and vendor access are now essential. Yet segmentation between IT and OT networks is often limited with remote access becoming one of the least governed paths into OT / CPS systems, and access privileges may be broader than necessary.
Modern cybersecurity strategies are becoming more reliant on least-privilege access and dynamic segmentation to reduce attack paths and limit lateral movement. Within a UZTNA framework, segmentation evolves from a static, IP-centric exercise into a dynamic control that adapts to device type, user identity, function, and risk, helping organizations reduce exposure without disrupting operations. For example, if attackers gain initial access through phishing, compromised credentials or unpatched systems, segmentation can prevent them from moving freely across networks and reaching critical industrial systems. Frameworks such as IEC 62443 explicitly recommend segmenting industrial networks into security zones and controlling communications between them. Implementing this architecture significantly reduces the potential blast radius of a cyber incident.
Combined with strong identity controls and monitoring, segmentation creates a layered defense that protects both operational systems and safety-critical processes.
From compliance to resilience
Boards and executive teams are recognizing that understanding how cyber risk affects production, safety, and supply chains is critical to business longevity. Effective cybersecurity programs must therefore translate security activity into clear operational outcomes.
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