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1 in Accuracy

Nessus has the industry's lowest false positive rate with six-sigma accuracy.

*.32 defects per 1 million scans
1 in Coverage

Nessus has the deepest and broadest vulnerability coverage in the industry.

1 in Adoption

Nessus is trusted by more than 30,000 organizations, with 2 million downloads worldwide.

1 in Hearts and Minds

Don't just take our word for it. See for yourself why security practitioners around the world put their trust in Nessus.

Nessus is #1 For Vulnerability Assessment

From the beginning, we've worked hand-in-hand with the security community. We continuously optimize Nessus based on community feedback to make it the most accurate and comprehensive vulnerability assessment solution in the market. 20 years later and we're still laser focused on community collaboration and product innovation to provide the most accurate and complete vulnerability data - so you don't miss critical issues which could put your organization at risk. Tenable is a 2021 Gartner Representative Vendor in Vulnerability Assessment. Read the details here.

Today, Nessus is trusted by more than 30,000 organizations worldwide as one of the most widely deployed security technologies on the planet - and the gold standard for vulnerability assessment. See for yourself - explore the product here.

66K+ CVEs
165,000+ Plugins
100+ new plugins
released weekly

Tenable’s Zero Day Research provides 24/7 updates into new and emergent vulnerabilities so you’ll always have full situational awareness.

Built For Practitioners, By Practitioners

Nessus was built from the ground-up with a deep understanding of how security practitioners work. Every feature in Nessus is designed to make vulnerability assessment simple, easy and intuitive. The result: less time and effort to assess, prioritize, and remediate issues. Learn More.

  • Deploy On Any Platform

    Nessus can be deployed on a variety of platforms including Raspberry Pi. Regardless as to where you are, where you need to go or how distributed your environment is, Nessus is fully portable. Read the Press Release.
  • Efficiency and Accuracy

    Dynamically compiled plug-ins increase scan performance and efficiency. This enables the faster completion of the first scan and time to value.
  • Zero in On Threats That Matter Most

    Market leading coverage so that you know every vulnerability. Leverage the power of Nessus so you can triage and address the threats that matter most.
  • Pre-Built Policies and Templates

    More that 450 pre-configured templates help you quickly understand where you have vulnerabilities. Easily audit configuration compliance against CIS benchmarks and other best practices.
  • Customizable Reporting & Troubleshooting

    Customizable reporting capabilities can be optimized to meet specific needs and are exportable the formats that are most suited for your security process.
  • Live Results

    Automatically perform an offline vulnerability assessment with every plugin update. From here you can easily run a scan to validate the presence of the vulnerability which accelerates the accurate detection and prioritization of issues.
  • Ease of Use

    Nessus is designed with an intuitive approach to navigation and user experience. This includes a resource center to guide you with actionable tips and guidance on the next steps to take.
  • Grouped View

    Similar issues or vulnerability categories are grouped together and presented in one thread, simplifying the time to research and prioritize issues for remediation.

30,000+ Customers worldwide rely on Nessus to keep their business safe and operational.

Get Started with Nessus Professional

Get the world’s most widely deployed vulnerability assessment solution.

Buy Nessus Pro Buy a multi-year license and save. Add Advanced Support for access to phone, community and chat support 24 hours a day, 365 days a year. Full details here.
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