Nozomi Networks vs Riot
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).
Paris cybersecurity employee risk monitoring at $10M+ ARR 2024 (triple-digit growth) serving Mistral AI, Deel, Intercom, Y Combinator; $45M total ($30M Left Lane Series B Feb 2025 at $170M val) with AI coach Albert competing with KnowBe4 for human risk management.
About
Riot is a Paris, France-based employee cybersecurity awareness and monitoring platform — backed with $45 million in total funding including a $30 million Series B in February 2025 led by Left Lane Capital at a $170 million+ post-money valuation with Y Combinator, Base10, and FundersClub — providing 1,500+ organizations including Mistral AI, Y Combinator, Modern Treasury, Deel, Intercom, L'Occitane, and Le Monde with real-time employee cybersecurity vulnerability detection and AI-powered awareness coaching through Albert, Riot's AI cyber coach. Surpassing $10 million in annual revenue in 2024 with triple-digit year-over-year growth, Riot detects employee-level security risks (weak passwords, unsafe file permissions, phishing susceptibility) and guides employees through interactive remediation coaching without requiring IT security team manual intervention.
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