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Security report for notanumber.digital

Not a number · Technology · Netherlands

Medium risk. 5 critical or high findings in Security headers, SSL/TLS and 1 other check.

Security score

59/100

Risk levelMedium

0–100, higher is better. How it is calculated

Not a number is a Dutch digital agency specializing in knowledge digitalization to reduce organizational dependency on specialists. Their services include product and document configurators, ERP integrations, and client portals, targeting organizations seeking digital transformation. The website is modern, fast, mobile-optimized, and SEO-friendly, built with React and Next.js using WordPress as a headless CMS. Security posture is good with HTTPS and domain transfer protections, though DNSSEC is not enabled and some security headers could be improved. Privacy compliance is strong with clear privacy and cookie policies and consent mechanisms. Overall, the site reflects a professional and trustworthy business with strong client references and a solid technical foundation.

Scanned

This is an earlier scan of notanumber.digital. View the latest report

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

5 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

  3. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Unregistered MX Record

      MX record points to unregistered domain: hwafhu4vtz6ek7e3xxwwv3rlup6z323a6rm62j34aruqiwb4tjpq.mx-verification.google.com

      What to do: Remove or fix MX record pointing to unregistered domain

      • RFC 5321 §5.1
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory

Need hands-on remediation? Email guard@offseq.com

Keep watching notanumber.digital

This scan found 23 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
72
Security headers
15
Email security
80
DNS health
65
Network security
40
GDPR outside view
83
Average
59

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The company operates in the technology sector with a medium-sized business founded in 2020. It has a strong market position supported by over 100 partners and multiple detailed case studies. Their business model focuses on B2B digital transformation services, emphasizing knowledge scaling to improve operational efficiency. The partnership ecosystem includes notable clients like Goedhuis, LesautoDeal, Normec Rei-Lux, and Hotelsterren. The company leverages modern web technologies and maintains active social media presence, enhancing brand visibility and trust.

Security posture

The website employs HTTPS with good SSL configuration and domain status protections. However, DNSSEC is not enabled, and some recommended security headers like Content-Security-Policy and X-Content-Type-Options are missing. No vulnerabilities or exposed sensitive data were detected. The use of asynchronous loading for tracking scripts reduces performance impact. Incident response and security policy documents are not publicly available, indicating room for improvement in transparency and preparedness.

Recommendations

  1. Enable DNSSEC to enhance DNS security and prevent spoofing.
  2. Implement Content-Security-Policy and other recommended security headers.
  3. Publish a formal security policy and incident response plan accessible to users.
  4. Regularly audit third-party scripts and dependencies for vulnerabilities.
  5. Enhance transparency by providing data retention policies and DPO contact information.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Not a number
Description
Not a number is a digital agency specializing in knowledge digitalization to make specialist knowledge usable across entire organizations, reducing dependency on specialists. They offer solutions such as product configurators, document configurators, ERP integrations, and client portals.
Key services
Knowledge digitalization, Product configurators, Document configurators, ERP system integration, Client portals, Custom software development
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, WordPress (headless CMS), Google Tag Manager, Google Fonts, Cookie Script
Frameworks
Next.js, React
Platforms
WordPress
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited and clientUpdateProhibited domain status
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager asynchronously

Analytics and tracking

Services
Google Analytics (via Google Tag Manager)
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Leadinfo
Marketing tools
Leadinfo
Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is fully accessible with rich content and multimedia
  2. Strong focus on knowledge digitalization and reducing dependency on specialists
  3. Multiple client case studies and partner logos displayed
  4. Good SEO and social media integration
  5. No visible security or privacy policy gaps
  6. Use of modern web technologies and asynchronous loading of scripts
  7. No signs of suspicious or malicious activity
Technical notes

Notes

The website uses a modern tech stack including React, Next.js, and WordPress as a headless CMS, ensuring good performance and scalability. Google Tag Manager and Leadinfo are used for analytics and marketing. The site is mobile-optimized with responsive design and good accessibility features. Hosting appears to be with Hostnet based on DNS servers. The site loads quickly and has well-structured metadata and SEO optimizations. There is no indication of technical debt or outdated technologies, positioning the site well for future growth.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 70/100Medium31 findingsView report
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