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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 tens of thousands of 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 tens of thousands of 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.

73K+ CVEs
179,000+ 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 by Practitioners

Nessus is 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 about the features here.

  • Deploy on Any Platform

    Nessus can be deployed on a variety of platforms, including Raspberry Pi. Regardless of 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, enabling faster completion of the first scan and time to value.
    Top VPR Threats
  • Gain Visibility Into Your Internet-Facing Attack Surface

    You can't protect what you can't see. Find and assess internet-connected assets before they find you.
    Secure Cloud Infrastructure
  • Secure Cloud Infrastructure Before Deployment

    Uncover security issues as part of the software development lifecycle (SDLC) before it’s too late.
    Terrascan
  • 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
  • Pre-Built Policies and Templates

    More than 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 in formats that are most suited for your security process.
    Customizable Reporting
  • Live Results

    Live Results automatically performs an offline vulnerability assessment with every plugin update, showing you where you may have vulnerabilities based on your scan history. From here you can easily run a scan to validate the presence of the vulnerability that accelerates the accurate detection and prioritization of issues.
    Live Results
  • 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 categories of vulnerabilities are grouped together and presented in one thread, simplifying the time to research and prioritize issues for remediation. Snoozing lets you select specific issues to disappear from view for a specified period of time. So you only focus on the issues that matter at that time.
    Grouped View

KEY USE CASES FOR NESSUS

Nessus is the world’s No. 1 vulnerability scanning solution. Learn more about its power by exploring how Tenable customers put it to work in a variety of critical situations.

Network penetration testers play a unique role in the IT security ecosystem.

Before executing full-fledged breach simulations that unveil how attackers can exploit specific weaknesses, pen testers often use Nessus first to identify exactly where those major vulnerabilities are hiding.

Read More

Students in cybersecurity education programs are invaluable to this highly specialized field.

Professors leading vulnerability assessment or vulnerability management courses use Nessus as a foundational tool. Its remarkable ease of use helps students quickly get acclimated to the essentials of uncovering vulnerabilities.

Read More

Cybersecurity consultants play pivotal roles in a constantly shifting threat and vulnerability landscape.

Cybersecurity consultants use Nessus to scour clients’ networks for vulnerabilities and create comprehensive reports that summarize security posture and contain key suggestions for remediation.

Read More

In years past, small and medium-sized businesses might have considered themselves effectively immune to cyberattacks.

Even the smallest companies that lack full-time cybersecurity staff can stay on top of vulnerabilities with Nessus, customizing comprehensive scans to meet unique business needs.

Read More

To learn more about Nessus features and functionality, visit our Nessus documentation page. To learn more about purchasing options, please contact your preferred reseller or visit our online store.

Tens of thousands of Customers worldwide rely on Nessus to keep their business safe and operational.

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Built for the modern attack surface, Nessus Expert enables you to see more and protect your organization from vulnerabilities from IT to the cloud.

Already have Nessus Professional?
Upgrade to Nessus Expert free for 7 days.

Buy Nessus Expert

Built for the modern attack surface, Nessus Expert enables you to see more and protect your organization from vulnerabilities from IT to the cloud.

Select Your License

Promotional pricing extended until December 31st.
Buy a multi-year license and save more.

Add Support and Training