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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

70/100

Risk levelMedium

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

Not a number is a Dutch digital agency specializing in knowledge digitization to reduce organizational dependency on specialists by making specialist knowledge accessible across the entire organization. Their market position is supported by over 100 partners and multiple detailed case studies showcasing successful digital transformation projects including product configurators, document configurators, and ERP integrations. The company targets businesses seeking to streamline and scale specialist knowledge digitally. Technically, the website uses a modern stack including React and WordPress as a headless CMS, with good performance and mobile optimization. Security posture is strong with HTTPS, security headers, and no visible vulnerabilities, though formal security policies and incident response information are not publicly available. Privacy compliance is well addressed with comprehensive privacy and cookie policies and consent mechanisms. Overall, the website is professional, trustworthy, and well-structured, supporting a positive business credibility profile.

Scanned

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 22 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

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  • 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
70
Network security
100
GDPR outside view
83
Average
70

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, focusing on B2B digital transformation services that enable clients to scale specialist knowledge through custom software solutions. Their business model revolves around bespoke digital product development and integration services. The presence of multiple client case studies and testimonials indicates a mature partnership ecosystem and a focus on long-term client relationships. The company leverages modern web technologies and maintains active social media channels to support marketing and client engagement. Growth indicators include a broad partner base and continuous project delivery. Strategic observations suggest a focus on knowledge scaling as a unique selling proposition, differentiating them in the digital agency market.

Security posture

The website demonstrates a good security maturity level with enforced HTTPS, appropriate security headers, and no exposed sensitive data. However, the absence of a public security policy, vulnerability disclosure program, or incident response contact reduces transparency and may impact trust for security-conscious clients. There is no evidence of outdated or vulnerable libraries. Data protection practices appear aligned with GDPR, supported by comprehensive privacy and cookie policies. Incident response readiness and security culture indicators are not publicly documented, representing an area for improvement. Overall, the security posture is solid but could be enhanced by formalizing and publishing security governance documents.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Implement and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  3. Provide clear incident response contact information, such as a security@ or abuse@ email address.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance transparency by including data retention policies and detailed GDPR compliance statements.
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 digitization to make specialist knowledge usable across entire organizations, reducing dependency on specialists. They provide custom digital solutions such as product configurators, document configurators, ERP integrations, and client portals.
Key services
Knowledge digitization, Product configurators, Document configurators, ERP system integration, Client portals, Custom software development
Content quality
excellent
Branding
consistent

Technology

Stack
React, WordPress (headless CMS), Google Tag Manager, Google Fonts, Leadinfo, JavaScript
Frameworks
React
Platforms
WordPress
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data in HTML
  • Secure forms with validation

Analytics and tracking

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

Advertising

Tracking pixels
Leadinfo
Marketing tools
Leadinfo
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is in Dutch and professionally presented.
  3. Strong focus on knowledge digitization and custom digital solutions.
  4. Multiple client case studies and testimonials enhance trust.
  5. Use of modern web technologies and good SEO practices.
  6. Privacy and cookie policies are present and comprehensive.
  7. Contact information is clearly provided including email and phone.
  8. No explicit security policy or incident response info found.
  9. WHOIS data is privacy-protected and incomplete but not suspicious.
Technical notes

Notes

The website is built using a modern technology stack including React for frontend and WordPress as a headless CMS backend. It employs Google Tag Manager and Leadinfo for analytics and tracking, and Google Fonts for typography. The site is well-optimized for performance and mobile responsiveness, with fast loading times and good accessibility features. SEO is well addressed with proper meta tags, Open Graph data, and structured JSON-LD schema. The hosting provider is not explicitly identified, but the use of CDN-hosted assets suggests a reliable infrastructure. Technical risks are minimal, with no visible deprecated or vulnerable components. Opportunities for modernization include expanding security governance and incident response capabilities.
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. 59/100Medium31 findingsView report
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