SaaSFort vs Intruder: Security Scanner Comparison 2026

Intruder recently launched GregAI — an AI assistant that triages vulnerabilities and suggests remediation steps. It’s a genuinely useful feature for DevOps teams managing large infrastructure footprints. The product keeps getting better.

The problem: Intruder’s Essential plan starts at $149/month. For a 20-person SaaS company that needs to prove external security posture to close an enterprise deal, that’s $1,788/year before you’ve generated a single compliance report. SaaSFort starts at €9/month — €108/year — and produces the NIS2 and ISO 27001 evidence enterprise buyers actually request.

That’s a 17× price gap. Here’s what’s behind it.

What Intruder Does

Intruder is a UK-based continuous vulnerability scanner built for infrastructure and DevOps teams. It combines three scanning engines — OpenVAS, Nuclei, and a proprietary web scanner — to test networks, cloud environments, and web applications from a single dashboard.

Core strengths:

• Multi-engine scanning. OpenVAS for network vulnerabilities, Nuclei for web-specific checks, plus Intruder’s own engine. The combination catches a wider range of issues than any single engine.
• Cloud connector integrations. Connect AWS, Azure, and GCP accounts. Intruder discovers cloud assets automatically and scans them on a schedule or when changes are detected.
• GregAI (2026). AI-powered vulnerability triage that prioritizes findings by exploitability and business context. Reduces the “1,000 findings, which 5 matter?” problem that plagues vulnerability scanners.
• Internal network scanning. Deploy an agent inside your network to scan internal services — databases, internal APIs, staging servers. SaaSFort and most external scanners skip this entirely.

Intruder targets mid-market IT teams with 50+ servers, multiple cloud accounts, and internal infrastructure to monitor. Their pricing reflects that scope.

What SaaSFort Does

SaaSFort is a German external security scanner built for B2B SaaS companies selling to enterprise. The output isn’t a developer dashboard — it’s procurement-ready evidence.

Core strengths:

• 60 checks, 21 categories, under 60 seconds. SSL/TLS configuration, HTTP security headers, DNS security including DMARC/SPF/DKIM, OWASP Top 10 coverage, cookie security, and more. Results stream in real-time via SSE.
• A–F security grade. Transparent scoring formula: (passed_checks / total_checks) × 100. Grades map to what enterprise procurement teams expect — not abstract risk scores.
• NIS2 + ISO 27001 compliance mapping. Every finding maps to NIS2 Article 21 measures and ISO 27001 Annex A controls. Export as NIS2 compliance PDF for your audit file.
• Deal Reports. Branded, procurement-ready documents you attach to security questionnaires and DDQ responses. Intruder’s reports are designed for security engineers, not procurement reviewers.

Feature Comparison

Feature	SaaSFort	Intruder
External web scanning	✅ 60 checks, 21 categories	✅ Multi-engine
Internal network scanning	❌	✅ OpenVAS agent
Cloud asset discovery	❌	✅ AWS/Azure/GCP
OWASP Top 10	✅	✅
SSL/TLS audit	✅	✅
Security headers	✅	✅
DNS security (SPF/DKIM/DMARC)	✅	Partial
NIS2 compliance mapping	✅	❌
ISO 27001 mapping	✅	❌
A–F security grade	✅	❌
Procurement-ready Deal Report	✅	❌ (technical reports)
AI triage (GregAI)	❌	✅
Scan speed	< 60 seconds	Minutes to hours
Setup time	0 — enter domain	Agent install + cloud config
Free tier	✅ Free scan, no signup	14-day trial only

Pricing: 17× Gap

Plan	SaaSFort	Intruder
Entry	€9/month (Starter)	$149/month (Essential)
Mid-tier	€19/month (Growth)	$299/month (Pro)
Top tier	€29/month (Scale)	$499/month (Premium)
Annual cost (entry)	€86/year	$1,788/year (€1,644)
Free option	✅ Unlimited free scans	14-day trial

At the entry level, Intruder costs 17× more than SaaSFort. The annual difference: €1,558. That’s enough to fund an annual penetration test — which SOC 2 auditors and enterprise buyers increasingly require as a separate line item anyway.

Where Intruder’s price makes sense

Intruder’s $149/month buys you three scanning engines, internal network scanning, and cloud asset discovery. If you operate 50+ servers across AWS and Azure with internal services that need vulnerability testing, SaaSFort won’t cover that. Intruder will, and GregAI helps you prioritize the findings.

But if your company is a 15–100 person SaaS vendor whose primary security need is “pass the enterprise buyer’s security review” — you’re paying for capabilities you won’t use.

NIS2 Compliance: The Gap That Matters for EU Companies

German SaaS companies face a specific problem Intruder doesn’t solve: NIS2 compliance evidence.

Under §38 BSIG, managing directors are personally liable for cybersecurity oversight. The BSI registration deadline passed in March 2026, and 17,500 companies missed it. Full enforcement hits October 2026.

SaaSFort maps every scan finding to NIS2 Article 21(2) measures — the 10 security requirements NIS2 mandates. The NIS2 compliance PDF export produces auditor-ready documentation. Intruder produces vulnerability reports with CVE IDs and severity ratings — useful for engineers, invisible to NIS2 auditors.

For the full NIS2 compliance picture: our NIS2 SaaS compliance guide covers all 10 Article 21 measures. If you’re weighing NIS2 against SOC 2, see our SOC 2 vs NIS2 framework comparison.

Who Each Scanner Serves

Choose Intruder if you:

• Manage internal networks with 50+ servers and cloud instances
• Need multi-engine scanning (OpenVAS + Nuclei + proprietary)
• Run workloads across AWS, Azure, and GCP that need continuous monitoring
• Have a dedicated DevOps or security engineer to interpret results and manage remediation
• Budget $1,800–$6,000/year for scanning tools
• Don’t need EU compliance mapping (NIS2, ISO 27001)

Choose SaaSFort if you:

• Sell B2B SaaS and face security questionnaires from enterprise buyers
• Need a Deal Report with an A–F grade you can send to procurement this week
• Require NIS2 or ISO 27001 compliance evidence mapped to your actual security posture
• Don’t have a dedicated security team — your CTO handles security alongside product work
• Want results in 60 seconds, not after configuring agents and cloud connectors
• Budget under €350/year for external security scanning

Can You Use Both?

Yes. Some teams run Intruder for internal infrastructure monitoring and SaaSFort for external posture evidence. At €9/month, adding SaaSFort to an existing Intruder setup is trivial — and the Deal Report fills a gap Intruder’s technical reports leave open.

A practical setup: Intruder Essential ($149/month) for cloud and internal scanning, plus SaaSFort Growth (€19/month) for continuous external monitoring with compliance mapping. Total: ~€168/month for end-to-end coverage.

But most B2B SaaS companies under 200 employees find that SaaSFort’s external scanning covers exactly what enterprise procurement evaluates — at 17× less cost.

FAQ

Is SaaSFort a replacement for Intruder?

Not fully. Intruder covers internal networks, cloud infrastructure, and multi-engine vulnerability scanning — capabilities SaaSFort intentionally skips. SaaSFort replaces the external scanning and compliance evidence portion of what Intruder does. For B2B SaaS companies whose primary need is enterprise-ready security documentation, SaaSFort delivers that for €9/month. For a broader comparison including Detectify, see our three-way scanner comparison.

Does Intruder offer NIS2 compliance reports?

No. Intruder produces technical vulnerability reports with CVE identifiers and CVSS scores. SaaSFort maps findings to NIS2 Article 21(2) measures, ISO 27001 Annex A controls, and OWASP standards — the frameworks EU enterprise buyers and auditors reference. See our NIS2 compliance checklist for what auditors expect.

How does GregAI compare to SaaSFort’s approach?

GregAI helps Intruder users prioritize which vulnerabilities to fix first — useful when you have hundreds of findings across infrastructure. SaaSFort takes a different approach: 60 deterministic checks with transparent scoring. No AI interpretation needed because the grade formula is auditable: (passed / total) × 100. For procurement teams, a deterministic grade is more defensible than an AI-triaged risk assessment.

What if I outgrow SaaSFort?

SaaSFort’s Scale plan (€29/month) covers B2B SaaS companies through Series B. If you grow to 500+ employees with multi-cloud infrastructure, internal network scanning, and a dedicated security team, add Intruder (or Detectify for EASM) alongside SaaSFort. The Deal Report and compliance mapping remain valuable regardless of company size — internal scanners don’t produce procurement-ready evidence.

Which tool helps close enterprise deals faster?

SaaSFort. Its Deal Report maps to the exact frameworks procurement teams evaluate — NIS2, ISO 27001, OWASP. Intruder produces technical reports for DevOps teams. If a prospect’s security reviewer receives a raw vulnerability report with CVE-2024-XXXXX identifiers, it generates follow-up questions. A SaaSFort Deal Report with an A-grade and compliance mapping answers the questions before they’re asked.

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See the difference yourself. Run a free scan — 60 checks, 21 categories, A–F grade in under 60 seconds. No signup required. For the full security strategy, download our free SaaS Security Playbook 2026.