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Security report for hetwkz-kind.nl

UMC Utrecht · Healthcare · Netherlands

Medium risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

72/100

Risk levelMedium

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

Het Wilhelmina Kinderziekenhuis (WKZ) is a specialized pediatric hospital operating under the umbrella of UMC Utrecht, a major university medical center in the Netherlands. The website serves as an informational and service portal for patients, families, and healthcare professionals, offering insights into pediatric care, treatments, research, and education. The site emphasizes tailored care for children and provides digital tools such as patient portals and apps to enhance patient engagement. Technically, the website employs modern web technologies including React and jQuery, integrates Google Tag Manager and Google Analytics for tracking, and embeds YouTube videos using the iframe API. The site is well-structured with good mobile optimization and accessibility features, reflecting a mature digital infrastructure. Hosting and domain registration align with academic and healthcare institutions, supported by DNSSEC and HTTPS for secure communications. From a security perspective, the website demonstrates strong fundamentals with enforced HTTPS, DNSSEC, and a cookie consent mechanism that respects user privacy. However, explicit security policies, incident response contacts, and vulnerability disclosure mechanisms are absent, representing areas for improvement. No critical vulnerabilities or suspicious elements were detected, and the domain registration data supports the legitimacy and trustworthiness of the site. Overall, the website presents a professional, secure, and user-friendly platform consistent with a reputable healthcare institution. Strategic enhancements in transparency around security policies and contact information would further strengthen trust and compliance.

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

3 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 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

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

Keep watching hetwkz-kind.nl

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.

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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
77
Security headers
30
Email security
70
DNS health
70
Network security
100
GDPR outside view
83
Average
72

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 WKZ website positions itself as a leading pediatric healthcare provider within the Netherlands, leveraging its affiliation with UMC Utrecht to establish credibility and authority. Its business model focuses on delivering specialized pediatric care, research, and education, targeting patients, families, and medical professionals. The presence of digital patient portals and apps indicates a commitment to digital transformation and patient engagement. Market positioning is strong within the healthcare sector, supported by institutional backing and a clear focus on pediatric services. The website's content and navigation reflect a user-centric approach, facilitating access to key services and information. Partnerships appear limited to institutional affiliations, with no external commercial partners explicitly linked. Growth indicators include ongoing content updates and integration of digital tools, suggesting a forward-looking operational strategy.

Security posture

The website exhibits a mature security posture with mandatory HTTPS, DNSSEC, and cookie consent mechanisms in place. The absence of exposed sensitive data and use of modern libraries reduce risk exposure. However, the lack of published security policies, incident response contacts, and vulnerability disclosure channels indicates gaps in transparency and readiness for security incidents. Compliance with GDPR is supported by comprehensive privacy and cookie policies. No critical vulnerabilities or suspicious activities were detected during analysis. The security score is high but could be improved by adding explicit security governance documentation and incident response information.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Add clear incident response contact information, such as a security@ or abuse@ email address.
  3. Implement and publish a security.txt file to facilitate vulnerability disclosure.
  4. Develop and publish terms of service to clarify user agreements and liabilities.
  5. Enhance visibility of contact information including phone numbers and emails for patient support.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
UMC Utrecht
Description
Het Wilhelmina Kinderziekenhuis (WKZ) is a specialized children's hospital part of UMC Utrecht, focusing on pediatric care with tailored treatments for children.
Key services
Pediatric treatments, Research, Education, Patient portals and apps
Content quality
good
Branding
consistent

Technology

Stack
React, jQuery, Google Tag Manager, Google Analytics, YouTube iframe API
Frameworks
React
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • DNSSEC enabled
  • Cookie consent with opt-out
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content.
  2. Strong institutional affiliation with UMC Utrecht.
  3. Good privacy and cookie policy presence with consent mechanism.
  4. No explicit contact emails or phone numbers found on the main page.
  5. No terms of service or security policy pages detected.
  6. Use of modern web technologies and analytics tools.
  7. No signs of WAF or blocking mechanisms.
  8. Good security posture with HTTPS and DNSSEC.
Technical notes

Notes

The website uses a modern front-end stack with React and jQuery, supported by Google Tag Manager and Google Analytics for analytics and marketing. The use of YouTube iframe API enables embedded video content with privacy considerations (youtube-nocookie domain). The site is mobile optimized and accessible, with semantic HTML and ARIA labels. Hosting appears stable and secure, with DNSSEC enabled and domain registration consistent with the institution. Performance is moderate, with potential for optimization in loading times. No CMS was explicitly detected, suggesting a custom or proprietary solution. Overall, the technical infrastructure supports a reliable and user-friendly experience with room for performance tuning and enhanced security documentation.
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

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