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Security report for hetwkz.nl

WKZ · Healthcare · Netherlands

Medium risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

69/100

Risk levelMedium

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

Het WKZ is a well-established pediatric hospital based in Utrecht, Netherlands, operating under the umbrella of UMC Utrecht. The website clearly communicates its healthcare services, research initiatives, educational programs, and community support activities. It targets patients, parents, healthcare professionals, and potential employees, positioning itself as a leading pediatric care provider in the region. The business model integrates healthcare delivery with research and education, supported by a strong parent organization. Technically, the website employs modern JavaScript frameworks such as React and Mantine, with structured data enhancing SEO and accessibility. The site is mobile-optimized and provides a good user experience with clear navigation and professional design. Security-wise, the site uses HTTPS with DNSSEC enabled, cookie consent mechanisms, and no visible vulnerabilities or exposed sensitive data. However, it lacks explicit security policies and incident response contacts, which could be improved. Overall, the website is trustworthy, compliant with GDPR, and professionally maintained, reflecting the credibility of the healthcare institution it represents.

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

4 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
    • High

      SSL Certificate Expires Soon

      SSL certificate expires in 18 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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

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  • TLS certificates and expiry
  • DNS records
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  • 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
62
Security headers
30
Email security
70
DNS health
70
Network security
100
GDPR outside view
83
Average
69

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 operates within the healthcare sector, focusing on pediatric care, research, and education. Its market position is strong as part of UMC Utrecht, a major medical center in the Netherlands. The website supports multiple business functions including patient information, appointment management, employment recruitment, and fundraising. The presence of partner domains related to employment and fundraising indicates a well-integrated ecosystem. The business model is service-oriented, relying on healthcare delivery and community engagement. Growth indicators include active research and educational content, as well as ongoing infrastructure projects like hospital renovations. The company maintains a consistent brand and professional online presence, supporting its competitive advantage in the regional healthcare market.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and DNSSEC enabled, reducing risks of interception and DNS spoofing. Cookie consent mechanisms align with privacy regulations, and no sensitive data is exposed in the HTML content. The use of reputable analytics tools like Google Analytics and Microsoft Clarity is consent-based, indicating privacy awareness. However, the absence of security headers and a published security policy or incident response contacts represents a gap in transparency and defense-in-depth. No vulnerabilities or suspicious domains were detected. The overall security score is high but could be improved by implementing additional HTTP security headers and publishing incident response information.

Recommendations

  1. Implement HTTP security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection against common web attacks.
  2. Publish a clear security policy and provide incident response contact channels (e.g., security@ or abuse@ email addresses) to improve transparency and readiness.
  3. Add a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Regularly review and update third-party scripts and libraries to mitigate risks from vulnerable dependencies.
  5. Enhance advertising transparency by clearly disclosing tracking and data usage practices to users.

Contact details published on the site

Addresses
Legal name
WKZ
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
WKZ
Description
Het WKZ is a hospital specializing in pediatric care, part of UMC Utrecht, providing healthcare services, research, and education focused on children.
Key services
Pediatric healthcare, Research, Education, Patient support, Employment opportunities
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, React, Google Tag Manager, Microsoft Clarity, Schema.org JSON-LD
Frameworks
React, Mantine (CSS framework)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

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

Analytics and tracking

Services
Google Analytics, Microsoft Clarity
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Microsoft Clarity
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 focus on pediatric healthcare and related services.
  3. Good use of structured data for SEO and clarity.
  4. Cookie consent and privacy policies are clearly presented.
  5. No visible security policy or incident response contacts.
  6. No exposed sensitive data or suspicious links.
  7. Use of modern JavaScript frameworks and analytics tools.
  8. Consistent branding and professional design.
Technical notes

Notes

The website uses a modern front-end stack with React and Mantine CSS framework, enabling responsive and accessible design. Structured data in JSON-LD format improves SEO and machine readability. The site loads external scripts for analytics and consent management, indicating a mature digital marketing approach. Hosting and domain registration are consistent with the healthcare institution's profile, likely managed by SURF B.V. or UMC Utrecht infrastructure. Performance is moderate, with potential for optimization in loading times and resource management. Accessibility features such as language selection and keyboard navigation support are present, contributing to a positive user experience. No CMS was explicitly detected, suggesting a custom or proprietary solution. Overall, the technical implementation supports the business goals effectively with room for incremental improvements.
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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