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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 Nessus the most accurate and comprehensive vulnerability assessment solution in the market. Today, Nessus is one of the most widely deployed security technologies on the planet - and the gold standard for vulnerability assessment.

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 24,000 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.

Watch the Video

Take the Guesswork out of Vulnerability Assessment

Get the Power of Tenable Research Behind You

Our research team works closely with the security community to discover new vulnerabilities and provide insights into published vulnerabilities to help organizations quickly detect them in their environment. Our research team builds these insights into Nessus to help you become a vulnerability assessment expert (without actually having to be one).

More than 100 zero-day vulnerabilities discovered over the past 3 years
New plugins released within 24 hours of vulnerability disclosure (on average)

Plugins are automatically updated in Nessus in real-time, providing you with timely information on the latest vulnerabilities and malware, a simple set of remediation actions, and a fast and easy way to see if your systems are vulnerable. This means more comprehensive assessments and less time required to research, validate and prioritize issues.

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.

  • Pre-Built Policies and Templates

    Out of the box, pre-configured templates are included for a range of IT and mobile assets - from configuration audits to patch management effectiveness - to help you quickly understand where you have vulnerabilities. Nessus includes more than 450 compliance and configuration templates to audit configuration compliance against CIS benchmarks and other best practices.
  • Customizable Reporting

    Easily create reports based on customized views, including specific vulnerability types, vulnerabilities by host or by plugin. Create reports in a variety of formats (HTML, csv and .nessus XML) and easily customize reports by team or client which can be emailed with every scan.
  • Live Results (coming soon)

    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 which accelerates the accurate detection and prioritization of issues.
  • Grouped View (coming soon)

    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.

More than 24,000 organizations trust Nessus.

“It makes scanning for vulnerabilities extremely easy!” -Nessus User

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Nessus®は、今日の市場で最も包括的な脆弱性スキャナです。Nessus Professional は脆弱性のスキャンプロセスを自動化し、コンプライアンスサイクルの時間を短縮化するため、ITチームに専念できます。

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Nessus®は、今日の市場で最も包括的な脆弱性スキャナです。Nessus Professional は脆弱性のスキャンプロセスを自動化し、コンプライアンスサイクルの時間を短縮化するため、ITチームに専念できます。

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