# What does AI recommend for vulnerability scanning tools (small businesses)? Checked 2026-09-08

## In short

On 2026-09-08, Claude (Anthropic) with web search was asked "best vulnerability scanning tools for small businesses". It named 9 brands, in this order: Intruder, Tenable Nessus Professional, Microsoft Defender, Microsoft 365 Business, Windows 365 Cloud PC, Greenbone Community Edition / OpenVAS.

| Fact | Value |
| --- | --- |
| Question | best vulnerability scanning tools for small businesses |
| Asked on | 2026-09-08 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 9 |
| Sources cited | 8 |
| Audience | small businesses |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-08 |

Page: https://bikoosh.com/answers/q/vulnerability-scanning-tools/small-businesses
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-08 through Claude (Anthropic) with web search (model claude-opus-5).

> ## For most small businesses, in the order I'd actually try them
> 
> **1. Intruder** - The default recommendation if you have a handful of internet-facing assets and no dedicated security person. It's SaaS, so nothing to host; it does continuous external attack-surface scanning and emails you when something new appears. Plans run roughly $99/mo (Essential), $180/mo (Cloud), $240/mo (Pro), with a free trial. Worth knowing what you're paying for: Essential runs OpenVAS under the hood, Cloud adds Nuclei, and Pro is where you get the Nessus engine - so the cheap tier is largely a managed wrapper around free tooling, which is fine if you value not running it yourself.
> 
> **2. Tenable Nessus Professional** - The deepest, most credible scanner pedigree, and the one auditors and pentesters recognize. Unlimited assessments, CVSS v4, plus config/compliance audits (CIS benchmarks), which matters if you're chasing SOC 2 or cyber insurance requirements. List is $4,790/yr, dropping to ~$4,546/yr effective on a 3-year term. It's more hands-on - it scans, it doesn't manage the remediation workflow for you.
> 
> **3. Microsoft Defender for Business** - Check this *before* buying anything. If you're on Micro

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Intruder | recommended |
| 2 | Tenable Nessus Professional | mentioned |
| 3 | Microsoft Defender | mentioned |
| 4 | Microsoft 365 Business | mentioned |
| 5 | Windows 365 Cloud PC | mentioned |
| 6 | Greenbone Community Edition / OpenVAS | mentioned |
| 7 | Nmap | mentioned |
| 8 | Skip | mentioned |
| 9 | Rapid7 InsightIDR | mentioned |

## Sources the engine cited

- https://blueheadline.com/cybersecurity/best-vulnerability-scanners-small-business/ (other)
- https://www.esecurityplanet.com/networks/vulnerability-scanning-tools/ (other)
- https://beaglesecurity.com/blog/article/intruder-pricing.html (other)
- https://www.luniq.io/en/resources/blog/qualys-vs-tenable-vs-rapid7-best-vulnerability-scanner-for-engineering-firms-in-2026 (other)
- https://secably.com/blog/tenable-alternatives/ (other)
- https://learn.microsoft.com/en-us/defender-business/mdb-overview (vendor)
- https://www.microsoft.com/en-us/security/small-medium-business/microsoft-defender-suite-business-premium (vendor)
- https://cipherssecurity.com/nessus-alternatives-2026/ (other)

Permanent address of this answer: https://bikoosh.com/answers/s/vulnerability-scanning-tools-small-businesses-2026-09-08

Answer Watch records what one AI answer engine said on one date, nothing more. Each page names the engine and the model, carries the date the question was asked, and lists the brands that appeared in the answer in the order the engine gave them, with the sources it cited. It is a measurement, not a ranking, not a recommendation and not a claim about the world. Brands that did not appear in an answer are not named on any public page. Coverage: Claude (Anthropic) with web search. Other engines not included.