Fortinet Q1: AI data‑center security and OT protection drove strong demand

Fortinet said its first-quarter 2026 results reflected strong demand in several parts of the security market that sit close to current enterprise spending priorities: AI infrastructure, industrial networks, encrypted traffic and region-specific cloud access. The company reported on May 6 that billings rose 31% year over year to $2.09 billion, revenue rose 20% to $1.85 billion and product revenue rose 41% to $645 million. (fortinet.com) Ken Xie, Fortinet’s founder and chief executive, said the quarter was supported by “strong execution and broad-based demand across our portfolio and geographies.” Here’s the clearest way to read what Fortinet itself highlighted in the quarter. (events.fortinet.com) ### Which parts of the business did Fortinet say were moving fastest? Fortinet executives said deal momentum was “especially notable” in OT security, AI data centers and sovereign SASE, according to the company’s first-quarter earnings call transcript. Separate company materials also tied the quarter to demand for secure networking tied to AI infrastructure and to products built for rising encrypted traffic. The most concrete figure among those growth areas was OT. Fortinet’s prepared remarks said OT security billings growth was “over 70%” in the quarter as customers focused on protecting critical infrastructure. (fortinet.com) The same prepared remarks said unified SASE billings grew 31%. ### Why does AI data-center security show up in a firewall company’s quarter? Fortinet used the quarter to point investors toward high-performance firewall demand inside modern data-center buildouts. The company said its new FortiGate 3500G and FortiGate 400G products were designed to help customers secure and scale enterprise networks while keeping pace with growing encrypted traffic. (fool.com) Fortinet’s earnings presentation said the FortiGate 3500G was designed to scale with AI-driven data-center requirements, and the company separately announced on May 12 that it was accelerating its FortiAIGate offering with NVIDIA AI platforms and software. Fortinet said that effort was aimed at securing enterprise AI deployments at scale. (docs.publicnow.com) ### What does “OT protection” mean in this quarter’s context? Fortinet has been positioning OT security around industrial and critical-infrastructure environments such as energy, manufacturing and other cyber-physical systems. Its OT security materials describe the offering as visibility, segmentation and automated threat protection for industrial networks. (fortinet.com) In the first-quarter prepared remarks, Fortinet said customers were prioritizing critical-infrastructure protection amid heightened threats. That framing matched the company’s broader OT messaging from its 2025 OT cybersecurity report, which said executive attention and regulatory pressure around industrial security were rising. (investor.fortinet.com) ### Where did encrypted-traffic inspection and sovereign SASE fit? Fortinet linked encrypted-traffic growth to higher-performance network security products. In its May 6 press release, the company said its new G Series additions were built to handle “growing encrypted traffic,” a direct reference to the heavier inspection load created by modern applications and AI-era network volumes. (fortinet.com) Sovereign SASE appeared in management’s list of standout deal areas on the earnings call. Fortinet tied that demand to regulatory, performance and digitalization requirements, according to the transcript excerpt surfaced by earnings-call coverage. (docs.publicnow.com) ### What is Fortinet putting in front of customers next? Fortinet’s next scheduled public event tied to this theme is a SecOps Demo Spotlight on June 4, 2026. The event page says the session will cover FortiSOC, endpoint protection and data-security controls for GenAI use, with speakers including Fortinet product and engineering staff. Fortinet’s website is also promoting a June 9 virtual OT Cybersecurity Summit, while the company’s home page continues to feature its June 4 Demo Spotlight and AI-driven SecOps messaging. (fortinet.com) Those events give the next public markers for how Fortinet plans to extend the same AI, OT and operations-security themes it emphasized in first-quarter commentary. (fortinet.com) (events.fortinet.com) (fool.com)