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Fortinet sells cybersecurity hardware and software that protects businesses' networks from hackers.
Fortinet is a cybersecurity company. It builds the digital equivalent of a fortress wall around a company's computer network, then sells the guards, cameras, and alarm systems that sit on top of it. Its core product is a firewall — a physical box or a piece of software that sits between a company's internal network and the open internet, inspecting every bit of traffic that tries to come in or go out. If a piece of traffic looks malicious, the firewall blocks it. Fortinet sells these firewalls, plus a wide range of add-on security services like antivirus scanning, email filtering, and secure remote access, to businesses, government agencies, and schools of all sizes.
The business works like a razor-and-blades model, but the blades are subscriptions. A customer buys a firewall appliance — that's the razor — and then pays Fortinet every year for the security services that make the appliance actually useful. Those subscription services are the faster-growing, higher-margin part of the business, and they generate recurring revenue that keeps compounding as the installed base of appliances grows. The company also runs one of the industry's largest threat intelligence networks, with millions of sensors deployed worldwide feeding data back to its labs so it can spot new attacks and push out updates. That intelligence advantage is a real moat: the more customers Fortinet has, the more threat data it collects, and the better its products get at catching attacks nobody has seen before. Fortinet competes with giants like Palo Alto Networks, Cisco, and Check Point Software Technologies, but it has carved out a reputation for strong performance at a lower price, which plays well with mid-sized businesses and cost-conscious IT departments. The company was founded in 2000 by Ken Xie, a serial entrepreneur who had already started one cybersecurity firm, and his brother Michael. Fortinet went public in 2009 and has grown into one of the largest pure-play security companies in the world, with annual revenue in the billions. Like many security firms, it benefits from a simple reality: the bad guys never stop, so the spending never stops either.
In a small Silicon Valley garage in late 2000, two brothers, Ken and Michael Xie, started a security company. They bet that hackers would increasingly hide attacks inside content like files and emails, and that the old guard of network security could not stop that. Their answer was the first FortiGate antivirus firewall, which packed several layers of defense into one box. That one-box idea became the seed of everything the company later built.
The first FortiGate firewall shipped in 2002, soon joined by anti-spam and antivirus software. Then came the quiet move that mattered for years: FortiGate was rebuilt around custom chips, purpose-built circuits that let one appliance do heavy security work fast and cheaply. That chip habit stuck, and it became a lasting edge over rivals.
In late 2009, the company sold shares to the public on Nasdaq. By the end of its first trading day it had raised a fortune — about $156 million — giving it the money and visibility to grow beyond a garage story. The garage startup was now a public company with a stock ticker.
In 2016, Fortinet began work on a bigger idea: make all its security products talk to each other as one system, called the Security Fabric. It then pulled switches, wireless access points, traffic analyzers, sandboxes and cloud tools into that same fabric. Instead of selling a pile of separate boxes, Fortinet could now offer customers one connected defense.
In early 2022, Fortinet shut down its operations in Russia, stopping all sales, support and professional services there. It was a clean break rather than a slow fade, and it showed the company putting principle and risk ahead of a market.
By 2024, Fortinet was filling gaps by buying companies. In the summer it acquired Lacework, a cloud security firm built on data analysis, and Next DLP, which specializes in stopping sensitive data from leaking out. The deals pushed the company deeper into protecting data and cloud systems, not just the network edge.
Fortinet joined the Nasdaq-100 index in late 2021, a sign of how far it had come. On its 25th anniversary in late 2025, it rang the Nasdaq opening bell as a global cybersecurity leader, with its products guarding the vast majority of the world's biggest companies. The garage startup had become one of the industry's giants.
Not long after, the market delivered a sharp reminder that growth is judged closely. Fortinet's stock fell about 25% after hours when it reported results: revenue was up 20% and billings up 29%, yet investors fled. Services revenue was growing more slowly, the company cut its full-year services forecast for the first time that year, and growth leaned on price increases that had only stabilized. The lesson was blunt: how you grow can matter as much as how much you grow.
Then Fortinet set its sights on the AI era, using one shared operating system called FortiOS and its own FortiASIC chips to protect AI systems. It launched an Inline AI Security Service and a SASE service, and was picked by NVIDIA as a top partner to help secure AI. It also topped a major analyst ranking for hybrid mesh firewalls for the second year running. The company that started by guarding email was now working to guard the machines that think.
The company generates a lot of free cash flow and has historically used it to buy back shares — it has repurchased a meaningful chunk of its stock over the years — while also funding internal development and small acquisitions. More recently, Fortinet has been pushing harder into cloud security and a "secure networking" strategy that bundles its firewall software into the networking gear customers already buy, which lets it grow without needing customers to swap out hardware. The main risk is that security is a crowded, fast-moving market, and a single high-profile breach or a product that falls behind can cost a vendor trust quickly. Fortinet's bet is that its scale, its threat data, and its price advantage keep it on the right side of that race.
Saved answer · last researched 29 Oct 2026