# What Claude (Anthropic) with web search answered for vulnerability scanning tools (small businesses) on 2026-09-25

## In short

On 2026-09-25, Claude (Anthropic) with web search was asked "best vulnerability scanning tools for small businesses". It named 11 brands; the first six, in order, were Intruder, Tenable Nessus, Nessus Essentials, CISA, US and Qualys Community Edition.

| Fact | Value |
| --- | --- |
| Question | best vulnerability scanning tools for small businesses |
| Asked on | 2026-09-25 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 11 |
| Sources cited | 8 |
| Audience | small businesses |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-25 |

Page: https://bikoosh.com/answers/s/vulnerability-scanning-tools-small-businesses-2026-09-25
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-25 through Claude (Anthropic) with web search (model claude-opus-5).

> Here's what I'd actually recommend, roughly in the order I'd try them:
> 
> **1. Intruder** - My default pick for a small business without a dedicated security person. It's cloud-hosted (nothing to install), scans your internet-facing assets continuously, and filters out noise so you get a short list of things that actually matter rather than a 400-page CVE dump. Plans run roughly $260-$500/month depending on cloud vs. hybrid coverage, with a free tier and a 14-day trial. The tradeoff: it's opinionated and you have less low-level control.
> 
> **2. Tenable Nessus (Essentials, then Professional)** - The industry workhorse and the best free starting point. **Nessus Essentials is free for up to 16 IPs**, which covers a lot of small offices outright. If you outgrow it, Professional is ~$2,190/year per scanner for unlimited IPs. Deepest plugin coverage of anything here; expect to do more tuning and triage yourself.
> 
> **3. CISA's free vulnerability scanning (CyHy)** - Genuinely free, run by the US government for private businesses and critical infrastructure. You sign up, they continuously scan your internet-facing assets and email you reports. It's not a replacement for a real scanner (external-

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Intruder | recommended |
| 2 | Tenable Nessus | recommended |
| 3 | Nessus Essentials | recommended |
| 4 | CISA | recommended |
| 5 | US | recommended |
| 6 | Qualys Community Edition | recommended |
| 7 | OpenVAS | recommended |
| 8 | OpenVAS / Greenbone | recommended |
| 9 | OpenVAS / Greenbone Community Edition | recommended |
| 10 | Invicti | recommended |
| 11 | NinjaOne | mentioned |

## Sources the engine cited

- https://www.intruder.io/blog/the-top-vulnerability-scanning-tools (vendor)
- https://www.intruder.io/pricing (vendor)
- https://www.infosectrain.com/blog/nessus-vs-qualys-vs-openvas (other)
- https://secably.com/blog/nessus-vs-openvas-which-vulnerability-scanner-to-choose-in-2026/ (other)
- https://www.ftc.gov/business-guidance/blog/2019/12/free-vulnerability-scanning-your-business (reference)
- https://www.helpnetsecurity.com/2018/09/06/qualys-community-edition/ (other)
- https://www.ninjaone.com/blog/vulnerability-scanning-tools/ (vendor)
- https://www.esecurityplanet.com/networks/vulnerability-scanning-tools/ (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.