Nozomi Networks vs Splunk
Side-by-side comparison of AI visibility scores, market position, and capabilities
SF OT/IoT cybersecurity Gartner 2025 CPS Leader acquired by Mitsubishi Electric for $883M Sep 2025 (largest OT security deal); 115M+ assets at 12,000+ installations competing with Claroty and Dragos for critical infrastructure ICS security.
About
Nozomi Networks is a San Francisco, California-based operational technology (OT) and IoT cybersecurity company — acquired by Mitsubishi Electric Corporation for $883 million in September 2025 in the largest OT security acquisition in history — providing critical infrastructure operators, industrial manufacturers, transportation systems, and utilities with AI-powered visibility and threat detection across operational technology environments: Guardian sensors monitoring industrial control systems (ICS) and SCADA networks, and the cloud-based Vantage management platform aggregating security data across enterprise OT environments. Protecting 115+ million industrial and IoT assets across 12,000+ installations worldwide, Nozomi is recognized as a Gartner Magic Quadrant Leader in the 2025 CPS Protection Platforms category. Operating as an independent subsidiary of Mitsubishi Electric with brand, leadership, and operations unchanged post-acquisition. Founded in 2013 by Andrea Carcano and Moreno Carullo (who pioneered the AI-powered ICS cybersecurity approach).
Data platform for security and observability acquired by Cisco for $28B in March 2024. Used by 90 of Fortune 100; 7,500+ enterprise customers globally; flagship SIEM and Splunk SOAR power enterprise security operations centers.
About
Splunk is a data platform for security and observability founded in 2003 in San Francisco, built on the idea that machine-generated data — logs, events, metrics, traces — contains the intelligence organizations need to detect threats, investigate incidents, and ensure digital systems stay available. The company's core technology indexes and searches massive volumes of machine data in real time, enabling security and IT operations teams to answer complex questions across their entire data estate without predefined schemas.\n\nSplunk's flagship product is its SIEM (Security Information and Event Management) platform, used by 90 of the Fortune 100 to detect and respond to security threats. Its broader portfolio includes Splunk Observability Cloud for infrastructure monitoring, Splunk SOAR for security orchestration and automated response, and Splunk IT Service Intelligence for IT operations. The platform's schema-on-read approach and SPL query language give analysts flexibility to investigate novel threats and operational issues that structured databases cannot accommodate.\n\nSplunk was acquired by Cisco for $28B in March 2024, one of the largest cybersecurity acquisitions in history, and has been integrated into Cisco's AI-driven security portfolio. The combination of Cisco's network telemetry and global customer relationships with Splunk's data analytics depth creates a powerful full-stack security and observability offering. Under Cisco, Splunk is adding AI-native features — including AI Assistant for SPL and automated threat detection — to maintain its leadership position as the SIEM market evolves toward AI-augmented security operations.
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