What Claude (Anthropic) with web search answered for vulnerability scanning tools (small businesses) on 2026-10-11

Claude (Anthropic) with web search claude-opus-5 asked 2026-10-11

Coverage: Claude (Anthropic) with web search. Other engines not included.

The question asked, verbatim: best vulnerability scanning tools for small businesses

Brands named, in the order the engine gave

1. Intruder mentioned
   Intruder - my default pick for most small businesses.
2. Microsoft mentioned
   Microsoft Defender Vulnerability Management - if you're already on Microsoft 365 Business Premium, the core version is bundled with Defender for Business at no extra cost.
3. Microsoft Defender mentioned
   Microsoft Defender Vulnerability Management - if you're already on Microsoft 365 Business Premium, the core version is bundled with Defender for Business at no extra cost.
4. Defender mentioned
   Microsoft Defender Vulnerability Management - if you're already on Microsoft 365 Business Premium, the core version is bundled with Defender for Business at no extra cost.
5. Microsoft 365 mentioned
   Microsoft Defender Vulnerability Management - if you're already on Microsoft 365 Business Premium, the core version is bundled with Defender for Business at no extra cost.
6. Microsoft 365 Business mentioned
   Microsoft Defender Vulnerability Management - if you're already on Microsoft 365 Business Premium, the core version is bundled with Defender for Business at no extra cost.
7. Microsoft 365 Business Premium mentioned
   Microsoft Defender Vulnerability Management - if you're already on Microsoft 365 Business Premium, the core version is bundled with Defender for Business at no extra cost.
8. Tenable Nessus mentioned
   Tenable Nessus - the right answer when you have internal infrastructure (servers, NAS, switches, VMs) to scan yourself rather than just an external footprint.
9. Nessus Essentials mentioned
   Nessus Essentials is free for up to 16 IPs, which covers a genuinely small office.
10. Qualys mentioned
    Qualys - pick this specifically if you take card payments and need PCI DSS scanning, since Qualys is an Approved Scanning Vendor and that's a box external scans have to tick.
11. Greenbone OpenVAS mentioned
    Greenbone OpenVAS - the free, open-source option.
12. OpenVAS mentioned
    Greenbone OpenVAS - the free, open-source option.
13. Astra Security mentioned
    Astra Security - scanning plus human-assisted pentesting and compliance-ready reports in one.
14. Snyk mentioned
    Snyk - only relevant if you write and ship your own software.
15. Pentest-Tools.com mentioned
    Pentest-Tools.com - good for occasional, on-demand scans when you don't want a subscription or a permanent program.
16. Malwarebytes mentioned
    Some "best vulnerability scanner for small business" rankings - G2's included - put Malwarebytes, Sophos, and ESET at the top on review volume.
17. Wiz mentioned
    And Wiz / Orca Security come up constantly in these lists.
18. Wiz / Orca Security mentioned
    And Wiz / Orca Security come up constantly in these lists.
19. Orca Security mentioned
    And Wiz / Orca Security come up constantly in these lists.
20. AWS mentioned
    They're excellent agentless cloud security platforms and almost certainly overkill and overpriced for a small business unless you're a cloud-native startup with real AWS/Azure sprawl.
21. Azure mentioned
    They're excellent agentless cloud security platforms and almost certainly overkill and overpriced for a small business unless you're a cloud-native startup with real AWS/Azure sprawl.
22. Qualys VMDR compared
    - G2 - Intruder vs Qualys VMDR (https://www.g2.com/compare/intruder-vs-qualys-vmdr)
23. NinjaOne mentioned
    - NinjaOne - Vulnerability Scanning Tools (https://www.ninjaone.com/blog/vulnerability-scanning-tools/)

Sources the engine cited

The answer, as recorded

## My actual recommendations, in order **1. Intruder** - my default pick for most small businesses. Cloud-hosted, so there's nothing to install, and it continuously scans your external attack surface (public IPs, web apps, cloud assets) and re-scans automatically when new CVEs drop. Starts around $149/month and the reporting is clean enough to hand straight to a client or auditor. The majority of its user base is genuinely SMB, not enterprise. ([intruder.io](https://www.intruder.io/blog/the-top-vulnerability-scanning-tools), [G2 comparison](https://www.g2.com/compare/intruder-vs-qualys-vmdr)) **2. Microsoft Defender Vulnerability Management** - if you're already on Microsoft 365 Business Premium, the core version is bundled with Defender for Business at no extra cost. It won't scan your website, but it covers the thing most small businesses actually get breached through: unpatched laptops and servers. Check what you already own before buying anything. **3. Tenable Nessus** - the right answer when you have internal infrastructure (servers, NAS, switches, VMs) to scan yourself rather than just an external footprint. **Nessus Essentials is free for up to 16 IPs**, which covers a genuinely small office. Nessus Pro runs roughly $3.4K/year, which is the point where you should compare it against Intruder. ([G2](https://www.g2.com/compare/qualys-was-vs-tenable-nessus), [eSecurity Planet](https://esecurityplanet.com/?p=27566)) **4. Qualys** - pick this specifically if you take card payments and need PCI DSS scanning, since Qualys is an Approved Scanning Vendor and that's a box external scans have to tick. VMDR is around $199/asset/year and quote-based, which gets expensive fast; it's otherwise more enterprise-shaped than you need. ([G2](https://www.g2.com/compare/intruder-vs-qualys-vm)) **5. Greenbone OpenVAS** - the free, open-source option. Capable, but you're paying in time: self-hosting, tuning, and interpreting noisy results. Worth it only if you have someone technical and a small footprint. ([eSecurity Planet](https://esecurityplanet.com/?p=27566)) **6. Astra Security** - scanning plus human-assisted pentesting and compliance-ready reports in one. The one I'd name if the real driver is a customer or insurer asking for SOC 2 / ISO 27001 evidence rather than day-to-day hygiene. ([getastra.com](https://www.getastra.com/blog/dast/vulnerability-scanning-for-smbs/)) **7. Snyk** - only relevant if you write and ship your own software. It scans your dependencies and code for known vulns and suggests fixes, with a usable free tier. It solves a different problem than the others here, so it's an addition, not a substitute. ([ninjaone.com](https://www.ninjaone.com/blog/vulnerability-scanning-tools/)) **8. Pentest-Tools.com** - good for occasional, on-demand scans when you don't want a subscription or a permanent program. ([G2](https://www.g2.com/products/pentest-tools-com/pricing)) ## Two things worth knowing Some "best vulnerability scanner for small business" rankings - G2's included - put **Malwarebytes, Sophos, and ESET** at the top on review volume. Those are endpoint protection products with some vulnerability-awareness features bolted on, not vulnerability scanners. Don't let that ranking redirect you. ([G2](https://www.g2.com/categories/vulnerability-scanner/small-business)) And **Wiz / Orca Security** come up constantly in these lists. They're excellent agentless cloud security platforms and almost certainly overkill and overpriced for a small business unless you're a cloud-native startup with real AWS/Azure sprawl. ([toolradar.com](https://toolradar.com/blog/best-vulnerability-scanning)) If I had to compress it: **start free with Nessus Essentials plus whatever Defender you already own; buy Intruder when you want it to run itself.** The tool matters much less than whether someone is actually assigned to read the output and patch things. Sources: - [intruder.io - top vulnerability scanning tools](https://www.intruder.io/blog/the-top-vulnerability-scanning-tools) - [G2 - Intruder vs Qualys VMDR](https://www.g2.com/compare/intruder-vs-qualys-vmdr) - [G2 - Intruder vs Qualys VM](https://www.g2.com/compare/intruder-vs-qualys-vm) - [G2 - Qualys WAS vs Tenable Nessus](https://www.g2.com/compare/qualys-was-vs-tenable-nessus) - [G2 - Vulnerability Scanner, Small Business](https://www.g2.com/categories/vulnerability-scanner/small-business) - [G2 - Pentest-Tools.com pricing](https://www.g2.com/products/pentest-tools-com/pricing) - [eSecurity Planet - Best SMB Vulnerability Scanning Tools](https://esecurityplanet.com/?p=27566) - [Astra Security - Vulnerability Scanning for SMBs](https://www.getastra.com/blog/dast/vulnerability-scanning-for-smbs/) - [NinjaOne - Vulnerability Scanning Tools](https://www.ninjaone.com/blog/vulnerability-scanning-tools/) - [ToolRadar - Best Vulnerability Scanning Tools 2026](https://toolradar.com/blog/best-vulnerability-scanning)

Near this answer

The same question, recorded on other dates: 2026-10-09, 2026-10-06, 2026-10-03, 2026-10-01, 2026-09-29, 2026-09-27, 2026-09-25, 2026-09-23, 2026-09-21, 2026-09-16, 2026-09-14.

vulnerability scanning tools, asked for other audiences: remote teams (asked 2026-10-11).

Other categories with a recorded answer: backup and recovery software, cloud hosting providers, compliance automation software, data loss prevention software.

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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.