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Security report for ggdreisvaccinaties.nl

GGD · Government · Netherlands

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

Security score

73/100

Risk levelMedium

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

The website www.ggdreisvaccinaties.nl is the official Dutch public health service (GGD) portal dedicated to travel vaccinations and related health advice. It serves as a centralized platform for travelers in the Netherlands to obtain vaccination information, schedule appointments, and subscribe to travel health notifications. The site is well-positioned as an authoritative government resource with extensive links to regional GGD vaccination centers, reinforcing its market position and trustworthiness. Technically, the site is built on Drupal 10, leveraging modern web technologies including Google Tag Manager, Cookiebot for cookie compliance, Microsoft Clarity for analytics, and ReadSpeaker for accessibility. The site demonstrates good mobile optimization, accessibility, and SEO practices, with a moderate performance profile. Security is robust with HTTPS enforced, appropriate security headers, and no exposed sensitive data or vulnerable libraries detected. Privacy compliance is strong, featuring a comprehensive privacy policy and an explicit cookie consent mechanism via Cookiebot, aligned with GDPR requirements. However, the site lacks explicit published security policies, incident response contacts, and vulnerability disclosure mechanisms, which are recommended for enhanced transparency and security posture. Overall, the website presents a professional, trustworthy, and user-friendly experience for its target audience. Strategic recommendations include publishing formal security and incident response policies, adding a vulnerability disclosure or security.txt file, and enhancing direct contact options to further improve user 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 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 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 ggdreisvaccinaties.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
72
Security headers
40
Email security
85
DNS health
60
Network security
100
GDPR outside view
83
Average
73

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

GGD operates as a government entity providing essential public health services focused on travel vaccinations. The website supports a service-oriented business model, offering free or subsidized vaccination services to Dutch travelers. Its competitive advantage lies in its official status, comprehensive regional network integration, and authoritative content. Revenue streams are likely government-funded, with no commercial advertising detected. The target customer segment is Dutch residents planning international travel. Growth indicators include digital subscription services for travel advice and appointment scheduling. The partnership ecosystem includes vaccination registries and regional GGD sites, enhancing service coverage and user convenience. Operationally, the site reflects a mature digital presence with ongoing compliance to privacy and security standards.

Security posture

The website exhibits a mature security posture with enforced HTTPS, modern security headers, and no visible vulnerabilities or exposed sensitive data. The use of Cookiebot ensures GDPR-compliant cookie management and user consent. Analytics tools are implemented with privacy considerations. However, the absence of a publicly available security policy, incident response contact information, and vulnerability disclosure process represents gaps in transparency and readiness. These gaps could impact user trust and regulatory compliance in the event of security incidents. The site would benefit from formalizing and publishing these policies to demonstrate a proactive security culture and incident management capability.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Enhance direct contact information availability, including phone numbers or emails for user support.
  5. Regularly review and update privacy and security documentation to maintain compliance and user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
GGD
Description
Official Dutch public health service website providing travel vaccination information and appointment scheduling.
Key services
Travel vaccination information, Appointment scheduling for vaccinations, Travel health advice subscription
Content quality
good
Branding
consistent

Technology

Stack
Drupal 10, Google Tag Manager, Cookiebot, Microsoft Clarity, ReadSpeaker
Frameworks
Drupal
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data detected
  • Use of security headers

Analytics and tracking

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

Advertising

Ad networks
Google AdSense, Meta Platforms, Inc.
Tracking pixels
Microsoft Clarity, Cookiebot
Marketing tools
Cookiebot
Transparency
good

Site quality

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

Key observations

  1. Official Dutch public health service website focused on travel vaccinations.
  2. Uses Drupal 10 CMS with modern web technologies.
  3. Comprehensive cookie consent implemented via Cookiebot.
  4. Multiple GGD regional vaccination locations linked with official domains.
  5. No signs of WAF or content blocking.
  6. No explicit security or incident response policies published.
  7. No terms of service page detected.
  8. Good use of HTTPS and security headers.
  9. Moderate user tracking with compliance to GDPR.
  10. Contact primarily via web forms; no direct emails or phone numbers found in content.
Technical notes

Notes

The website is built on Drupal 10 CMS, indicating a modern and supported platform. It integrates Google Tag Manager for analytics and marketing, Microsoft Clarity for user behavior insights, and Cookiebot for cookie consent management. The site uses ReadSpeaker for accessibility enhancements. Performance is moderate, with good mobile responsiveness and SEO optimization. The technical stack is well-chosen for a government health service website, balancing functionality, compliance, and user experience. Opportunities exist to improve hosting transparency and optimize performance further. Technical risks are minimal with no outdated or vulnerable libraries detected.
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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