Industrial IoT (IIoT) connects factory equipment and production systems. OT (Operational Technology) network security directly affects production continuity. This review evaluates key IIoT security solutions in 2026.

OT Security Unique Challenges

OT systems have long lifecycles (20-30 years), making frequent updates difficult. Legacy protocols (Modbus, PROFINET) lack security design. Production continuity takes priority; security updates must occur during planned downtime. IT/OT convergence brings new attack surfaces.

Security Solutions

Claroty: OT network discovery and anomaly detection. Nozomi Networks: Real-time monitoring and threat detection for industrial control systems. Palo Alto OT Security: Industrial firewalls and security management. Dragos Platform: Industrial control system threat intelligence and response.

Conclusion

OT security requires IT/OT security team collaboration, drawing on IT security mature experience while respecting OT environment particularities.