Tenable made its name with Nessus, one of the most widely deployed vulnerability scanners in the world. Over 30,000 organizations rely on Nessus to find and fix weaknesses before attackers exploit them. It’s been a go-to tool for security teams since the early 2000s.
The company has expanded well beyond scanning. Tenable One, its exposure management platform, combines vulnerability data with asset inventory, cloud security posture, identity analysis, and attack path modeling. The goal is a unified view of risk across the entire attack surface.
Tenable.io handles cloud-native vulnerability management, while Tenable.cs focuses on infrastructure-as-code security. Tenable.ad protects Active Directory environments, which remain one of the most targeted components in enterprise breaches.
What sets Tenable apart is depth of coverage. The platform audits over 80,000 CVEs and supports configuration checks for everything from AWS to OT/SCADA systems. For organizations with complex, hybrid environments, that breadth matters.
