Tenable vs Palo Alto Networks
Side-by-side comparison of AI visibility scores, market position, and capabilities
$974.60M revenue TTM 2025 (+11% YoY); $3.51B market cap NYSE:TENB; #1 worldwide vulnerability management IDC 2024; Vulcan Cyber acquisition $148M Feb 2025; vulnerability leader
About
Tenable is a cybersecurity company founded in 2002 and headquartered in Columbia, Maryland, that pioneered the vulnerability management category and remains its global leader. The company was founded by Ron Gula and Jack Huffard around the Nessus vulnerability scanner, one of the most widely deployed security tools in the world, with a mission to help organizations understand and reduce their cyber exposure across their entire attack surface. Tenable's core conviction is that organizations cannot defend what they cannot see — and that comprehensive, continuous visibility into vulnerabilities is the prerequisite to effective security.\n\nTenable's platform portfolio includes Tenable.io (cloud-native vulnerability management), Tenable.sc (on-premises), Tenable OT Security (operational technology), Tenable Web App Scanning, Lumin (exposure-based risk scoring), and the Tenable One exposure management platform. The company serves enterprise and government customers globally with a product suite that covers cloud workloads, on-premises infrastructure, operational technology, and web applications. In February 2025, Tenable completed the $148 million acquisition of Vulcan Cyber, a risk-based vulnerability prioritization platform, expanding its capabilities in correlating vulnerability data with threat intelligence and business context.\n\nTenable reported trailing twelve-month revenue of $974.60 million as of 2025, up 11% year over year, and was named the number one worldwide vulnerability management vendor by IDC in 2024. The company trades on Nasdaq under the ticker TENB and competes against Qualys, Rapid7, and a growing set of cloud-native exposure management entrants. Its Nessus heritage, market leadership validation from IDC, and strategic expansion into broader exposure management through Tenable One and the Vulcan Cyber acquisition position it as the reference platform for enterprise vulnerability and exposure management.
Santa Clara cybersecurity platform (NASDAQ: PANW) $8.0B FY2024 revenue (+16%); platformization 3,600+ customers, Cortex XSIAM AI SOC, $4.2B NGSSAR +42%, competing with CrowdStrike and Microsoft Defender.
About
Palo Alto Networks, Inc. is a Santa Clara, California-based cybersecurity platform company — publicly traded on the NASDAQ (NASDAQ: PANW) as an S&P 500 Information Technology component — providing network security, cloud security, and AI-driven security operations through three integrated security platforms: Strata (network security — next-generation firewalls, SD-WAN, Zero Trust Network Access), Prisma Cloud (cloud security posture management, cloud workload protection, CSPM/CWPP), and Cortex (AI-driven security operations — XSIAM extended security intelligence and automation management, XDR endpoint detection and response, XSOAR security orchestration) through approximately 15,000 employees worldwide. In fiscal year 2024 (ending July 2024), Palo Alto Networks reported revenues of $8.0 billion (+16% year-over-year), with next-generation security Annual Recurring Revenue (ARR — Prisma Cloud and Cortex subscriptions) growing 42% to $4.2 billion as large enterprise and government customers consolidated security toolsets onto Palo Alto Networks' platform versus maintaining dozens of point solution security vendors. CEO Nikesh Arora (joined 2018 from SoftBank as Chairman and CEO) has executed the "platformization" strategy — convincing large enterprise security buyers to replace 10-15 individual security vendors (email security, endpoint protection, cloud workload protection, network detection) with a consolidated Palo Alto Networks platform contract that provides 80% of point-solution capabilities at 50% of the total cost — using the first-year transition economics to accelerate platform adoption through deferred commitment offers (paying a lower platform price in year 1 in exchange for multi-year platform commitment in years 2-4).
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