{"question": "best vulnerability scanning tools for small businesses", "category": "vulnerability-scanning-tools", "category_name": "vulnerability scanning tools", "audience": "small-businesses", "audience_name": "small businesses", "engine": "Claude (Anthropic) with web search", "model": "claude-opus-5", "asked_at": "2026-10-14T22:09:06Z", "permalink": "https://bikoosh.com/answers/s/vulnerability-scanning-tools-small-businesses-2026-10-14", "question_page": "https://bikoosh.com/answers/q/vulnerability-scanning-tools/small-businesses", "brands_named": [{"position": 1, "brand": "Intruder", "label": "recommended"}, {"position": 2, "brand": "Tenable", "label": "recommended"}, {"position": 3, "brand": "Tenable Nessus", "label": "recommended"}, {"position": 4, "brand": "Tenable Nessus Essentials", "label": "recommended"}, {"position": 5, "brand": "Nessus Essentials", "label": "recommended"}, {"position": 6, "brand": "Nessus Professional", "label": "recommended"}, {"position": 7, "brand": "Professional", "label": "recommended"}, {"position": 8, "brand": "Astra", "label": "recommended"}, {"position": 9, "brand": "Astra Security", "label": "recommended"}, {"position": 10, "brand": "Snyk", "label": "recommended"}, {"position": 11, "brand": "OpenVAS / Greenbone", "label": "recommended"}, {"position": 12, "brand": "Linux", "label": "recommended"}, {"position": 13, "brand": "Qualys VMDR", "label": "mentioned"}], "sources_cited": [{"url": "https://www.intruder.io/blog/the-top-vulnerability-scanning-tools", "domain": "intruder.io", "source_type": "vendor"}, {"url": "https://www.g2.com/compare/intruder-vs-qualys-vmdr", "domain": "g2.com", "source_type": "review"}, {"url": "https://www.getastra.com/blog/dast/vulnerability-scanning-for-smbs/", "domain": "getastra.com", "source_type": "other"}, {"url": "https://www.g2.com/compare/qualys-was-vs-tenable-nessus", "domain": "g2.com", "source_type": "review"}, {"url": "https://www.esecurityplanet.com/networks/smb-vulnerability-scanner/", "domain": "esecurityplanet.com", "source_type": "other"}, {"url": "https://www.g2.com/compare/qualys-was-vs-tenable-nessus-vs-intruder", "domain": "g2.com", "source_type": "review"}, {"url": "https://www.g2.com/categories/vulnerability-scanner/small-business", "domain": "g2.com", "source_type": "review"}], "answer_text": "Here's what I'd actually recommend, roughly in the order I'd suggest you look at them:\n\n**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))\n\n**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", "answer_truncated": true, "measurement": "One answer from one engine on one date. Not a ranking and not a claim about the world; brands the engine did not name are not recorded.", "limitation": "Coverage: Claude (Anthropic) with web search. Other engines not included.", "alerts": {"name": "Answer Watch Pro", "price_usd": 79, "period": "month", "gets": "daily change alerts for up to 5 brands in what one AI answer engine says, history, CSV export. Coverage: Claude (Anthropic) with web search. Other engines not included", "url": "https://bikoosh.com/answers"}}