# What Claude (Anthropic) with web search answered for vulnerability scanning tools (small businesses) on 2026-10-14

## In short

On 2026-10-14, Claude (Anthropic) with web search was asked "best vulnerability scanning tools for small businesses". It named 13 brands; the first six, in order, were Intruder, Tenable, Tenable Nessus, Tenable Nessus Essentials, Nessus Essentials and Nessus Professional.

| Fact | Value |
| --- | --- |
| Question | best vulnerability scanning tools for small businesses |
| Asked on | 2026-10-14 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 13 |
| Sources cited | 7 |
| Audience | small businesses |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-10-14 |

Page: https://bikoosh.com/answers/s/vulnerability-scanning-tools-small-businesses-2026-10-14
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-10-14 through Claude (Anthropic) with web search (model claude-opus-5).

> Here's what I'd actually recommend, roughly in the order I'd suggest you look at them:
> 
> **1. Intruder** - My default recommendation for most small businesses. It's built for exactly your situation: cloud-based, no appliance to run, continuous external scanning with alerts when a new critical CVE affects something you own. It's the only major player in this space where small business is the *primary* customer base (~59% of its reviews), not an afterthought, and it has the highest satisfaction rating of the commercial options at 4.8/5. Starts around $149/month. ([intruder.io](https://www.intruder.io/blog/the-top-vulnerability-scanning-tools), [G2 comparison](https://www.g2.com/compare/intruder-vs-qualys-vmdr))
> 
> **2. Tenable Nessus Essentials (free) → Nessus Professional** - Nessus is the industry-standard scanner with the deepest vulnerability check library. Essentials is free for up to 16 IPs, which genuinely covers a lot of small offices, and it's the fastest way to get real data without spending anything. The upgrade to Pro is ~$3,390/year, which is where it gets expensive for a small shop - but you'll know by then whether you need it. Caveat: it's a tool, not a service. You get a

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Intruder | recommended |
| 2 | Tenable | recommended |
| 3 | Tenable Nessus | recommended |
| 4 | Tenable Nessus Essentials | recommended |
| 5 | Nessus Essentials | recommended |
| 6 | Nessus Professional | recommended |
| 7 | Professional | recommended |
| 8 | Astra | recommended |
| 9 | Astra Security | recommended |
| 10 | Snyk | recommended |
| 11 | OpenVAS / Greenbone | recommended |
| 12 | Linux | recommended |
| 13 | Qualys VMDR | mentioned |

## Sources the engine cited

- https://www.intruder.io/blog/the-top-vulnerability-scanning-tools (vendor)
- https://www.g2.com/compare/intruder-vs-qualys-vmdr (review)
- https://www.getastra.com/blog/dast/vulnerability-scanning-for-smbs/ (other)
- https://www.g2.com/compare/qualys-was-vs-tenable-nessus (review)
- https://www.esecurityplanet.com/networks/smb-vulnerability-scanner/ (other)
- https://www.g2.com/compare/qualys-was-vs-tenable-nessus-vs-intruder (review)
- https://www.g2.com/categories/vulnerability-scanner/small-business (review)

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

Alerts and membership: Answer Watch Pro, 79 USD per month: https://bikoosh.com/answers. Bikoosh is monitoring assistance, not complete protection.

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.