Nozomi Networks and SEL expanded OT cybersecurity partnership

Nozomi Networks, which describes itself as the leader in OT (operational technology), IoT (internet of things), and CPS (cyber-physical systems) security, and Schweitzer Engineering Laboratories, an industry-leading innovator in power system protection, automation, and infrastructure solutions, expanded their global partnership on Oct. 20, 2026. The collaboration combines Nozomi’s AI-powered cybersecurity platform with SEL’s industrial networking software, OT switches, trusted computing platforms, services, and regulatory expertise. The announcement originated from San Francisco, California, and Pullman, Washington.

At the core of the expanded partnership is a direct integration between the Nozomi platform and SEL’s OT Software-Defined Networking. SEL’s OT SDN, which the companies describe as the strongest deny-by-default architecture option, supplies authoritative control-layer intelligence, including near real-time visibility of connected assets, traffic flows, network policies, and physical topology. Nozomi Networks states that these capabilities can help utilities meet growing Internal Network Security Monitoring requirements under NERC CIP-015-1.

The integrated architecture supports compliance with several regulatory frameworks, including NERC CIP, IEC 62443, and NIST guidance. The partners describe the combined portfolio as more comprehensive and designed to accelerate and scale security programs for critical infrastructure operators.

Nozomi Networks Guardian security sensors can now be installed directly on SEL-3355 Computing Platforms. The SEL-3355 is ruggedized hardware built for demanding environments, allowing advanced OT monitoring in harsh conditions. Both the OT SDN integration and the SEL-3355 platform with Guardian preinstalled are available.

The option gives organizations already familiar with SEL hardware another way to standardize cybersecurity monitoring across their operations. The integrated architecture options, which aim to strengthen resilience and streamline compliance, combine the AI-driven detection of Nozomi with the control-layer intelligence of SEL’s OT SDN. The expanded partnership helps operators scale their security programs while maintaining essential operational performance.

Ryan Bradetich, SEL senior vice president of communications and cybersecurity, said, “Critical infrastructure operators must strengthen cybersecurity without compromising the reliability and availability of essential operations.” Matthew Cowell, Nozomi Networks vice president of strategic alliances, said, “For more than four decades, SEL has helped protect critical infrastructure and make electric power safer and more reliable”.

Nozomi Networks describes itself as the leader in OT, IoT, and CPS security. Its platform combines network and endpoint visibility, threat detection, and AI-powered analysis to speed incident response. Customers rely on Nozomi to reduce risk and complexity while maximizing operational resilience.

SEL is a 100 percent employee-owned company headquartered in Pullman, Washington, and has manufactured products in the United States since 1984. The company provides a 10-year worldwide warranty on its products, and its technology prevents blackouts and improves power system reliability, safety, and cost. SEL describes itself as an industry-leading innovator in power system protection, automation, and infrastructure solutions.

The Nozomi Networks platform and SEL Blueframe provide data collection and deployment options that leverage existing infrastructure investments. The two companies state they commit to continued innovation on industry-leading industrial platforms.

The expanded partnership aims to help operators strengthen cyber resilience, improve operational visibility, and address evolving regulatory requirements. The companies describe the combined portfolio as more comprehensive and designed to accelerate and scale security programs.

The integration gives critical-infrastructure operators a combined OT SDN visibility and AI-powered detection model. This model is intended to help them meet evolving regulatory requirements such as NERC CIP-015-1 while maintaining operational performance.

The integration was announced on Oct. 20, 2026. The solutions are intended for deployment by utilities and other critical infrastructure operators worldwide.