# What Claude (Anthropic) with web search answered for vulnerability scanning tools (small businesses) on 2026-09-16

## In short

On 2026-09-16, Claude (Anthropic) with web search was asked "best vulnerability scanning tools for small businesses". It named 19 brands; the first six, in order, were Intruder, Tenable, Tenable Nessus, Nessus Essentials, Nessus Professional and Greenbone OpenVAS.

| Fact | Value |
| --- | --- |
| Question | best vulnerability scanning tools for small businesses |
| Asked on | 2026-09-16 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 19 |
| Sources cited | 7 |
| Audience | small businesses |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-16 |

Page: https://bikoosh.com/answers/s/vulnerability-scanning-tools-small-businesses-2026-09-16
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-16 through Claude (Anthropic) with web search (model claude-opus-5).

> ## The short list
> 
> **1. Intruder** - my default recommendation for most small businesses. It's SaaS, so there's no scanner appliance to babysit; it watches your external perimeter continuously, alerts you when a new CVE affects something you've exposed, and it aggressively filters noise - which matters enormously when nobody on staff has "security" in their job title. It covers external IPs, web apps, APIs, and cloud accounts in one place. Free 14-day trial, and the plan tiers (Essential/Pro/Premium) are published rather than quote-only. ([intruder.io](https://www.intruder.io/blog/the-top-vulnerability-scanning-tools), [blueheadline.com](https://blueheadline.com/cybersecurity/best-vulnerability-scanners-small-business/))
> 
> **2. Tenable Nessus** - the right pick if you have someone technical who wants depth and control. It has the deepest plugin/check library of anything in this price range, does credentialed internal scans and CIS/compliance audits, and it's what most consultants and MSPs already know. Two things worth knowing: **Nessus Essentials is free for up to 16 IPs**, which genuinely covers a lot of small offices, and Nessus Professional runs roughly $4,000/year with support 

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Intruder | recommended |
| 2 | Tenable | mentioned |
| 3 | Tenable Nessus | mentioned |
| 4 | Nessus Essentials | mentioned |
| 5 | Nessus Professional | mentioned |
| 6 | Greenbone OpenVAS | mentioned |
| 7 | OpenVAS | mentioned |
| 8 | Linux | mentioned |
| 9 | Qualys | mentioned |
| 10 | Qualys VMDR | mentioned |
| 11 | Rapid7 | mentioned |
| 12 | Rapid7 InsightVM | mentioned |
| 13 | Detectify | mentioned |
| 14 | Astra | mentioned |
| 15 | OWASP ZAP | mentioned |
| 16 | ZAP | mentioned |
| 17 | Vanta | mentioned |
| 18 | Drata | mentioned |
| 19 | NinjaOne | mentioned |

## Sources the engine cited

- https://www.intruder.io/blog/the-top-vulnerability-scanning-tools (vendor)
- https://blueheadline.com/cybersecurity/best-vulnerability-scanners-small-business/ (other)
- https://www.selecthub.com/vulnerability-management-software/nessus-vs-qualys/ (other)
- https://heimdalsecurity.com/blog/tenable-vs-qualys/ (other)
- https://www.ninjaone.com/blog/vulnerability-scanning-tools/ (vendor)
- https://www.getastra.com/pentest-compare/qualys-vs-tenable (other)
- https://tech-insider.org/tenable-vs-qualys-vs-rapid7-vulnerability-scanners-2026/ (other)

The question page: https://bikoosh.com/answers/q/vulnerability-scanning-tools/small-businesses

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.