Tenable scans your network and systems for known security vulnerabilities, giving a business or IT team a prioritized list of what to fix before it becomes an actual breach. A free tier, Nessus Essentials, makes basic scanning accessible even without a security budget.
Key features
- Scans networks and systems for known vulnerabilities
- Free Nessus Essentials tier covers basic scanning for up to 16 IP addresses
- Prioritized findings to help teams fix the highest-risk issues first
- Broader Tenable Vulnerability Management platform for larger environments
Pricing
Nessus Essentials is free and covers basic vulnerability scanning for up to 16 IP addresses, suitable for individuals or very small teams. Nessus Professional runs about $366 a month per license, and Nessus Expert is about $533 a month per license. Tenable Vulnerability Management is priced per asset, at roughly $292 a month with a minimum of about 65 assets. Enterprise products are custom-quoted. Confirm current pricing directly with Tenable, since this market shifts often.
Pros and cons
| Pros | Cons |
|---|---|
| Free tier gives real vulnerability scanning capability, not just a demo | Paid tiers are priced for businesses with a real security budget, not solo founders |
| Prioritized findings help small teams focus limited time on the biggest risks | Per-license and per-asset pricing across products makes comparing costs confusing |
Who it’s for
Growing businesses and organizations handling sensitive data, like fintechs or platforms holding user information, that need to find security gaps before they are exploited.
Who should skip it
A very early-stage business with no sensitive data and a simple website can start with basic hosting security practices before paying for dedicated vulnerability scanning.
How to get started
Start with the free Nessus Essentials scan on your main systems, review what it flags, and decide whether a paid tier is worth it based on what you find.
Scan for vulnerabilities with Tenable
FAQ
Is Tenable’s free plan good enough for a small business?
Nessus Essentials covers basic scanning for up to 16 IP addresses, which is a reasonable starting point for a small setup, though it lacks the scale of paid tiers.
How is Tenable Vulnerability Management priced?
It is priced per asset with a minimum asset count, rather than a flat monthly fee, so cost depends on how many systems you need to monitor.
Disclosure: Africapreneurs may earn a commission if you sign up for Tenable through the links in this article. This does not change what you pay, and it does not influence which tools we choose to cover.
