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Security report for seksonderje25e.nl

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

58/100

Risk levelMedium

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

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 100 · Medium
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. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. 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 seksonderje25e.nl

This scan found 24 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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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
20
Email security
80
DNS health
70
Network security
40
GDPR outside view
68
Average
58

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention seksonderje25e.nl, from OffSeq Breach.

No leaked records found

Breach holds no records for seksonderje25e.nl right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

The website represents a key national research project in the Dutch public health sector, focusing on youth sexual health. Its market position is strong due to government backing and partnerships with major health organizations. The business model is non-profit and research-driven, with revenue likely from government grants and public funding. The target audience includes youth, healthcare providers, educators, and policymakers. The partnership ecosystem is robust, involving Soa Aids Nederland, Rutgers, RIVM, CBS, and regional GGD's. The site’s content and event-driven engagement indicate active community and professional involvement, supporting growth and influence in sexual health policy and education.

Security posture

The current security maturity is moderate. HTTPS and CSRF protections are in place, and privacy compliance is supported by cookie consent and a privacy policy. However, the absence of HTTP security headers and DNSSEC reduces defense-in-depth. No incident response or vulnerability disclosure policies are publicly visible, which could hinder rapid response to security events. The use of Matomo analytics is privacy-conscious but requires ongoing monitoring for compliance. Overall, the site is secure for its purpose but should adopt additional security controls and transparency measures to align with best practices and regulatory requirements.

Recommendations

  1. Implement HTTP security headers including Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, and X-Content-Type-Options.
  2. Enable DNSSEC on the domain to protect against DNS spoofing and improve domain security.
  3. Publish a clear incident response and vulnerability disclosure policy to enhance transparency and preparedness.
  4. Regularly audit and update third-party scripts and analytics tools to mitigate potential vulnerabilities.
  5. Enhance accessibility features and provide a terms of service page to improve compliance and user trust.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Seks onder je 25e
Description
Seks onder je 25e is the largest national research study on sex and relationships among youth aged 12 to 25 in the Netherlands, conducted every 5 years by Soa Aids Nederland and Rutgers on behalf of the Ministry of Health, Welfare and Sport and RIVM, in collaboration with regional GGD's and CBS.
Key services
Conducting large-scale sexual health research, Publishing research findings and reports, Organizing conferences and workshops, Providing data to policymakers and health professionals
Content quality
good
Branding
consistent

Technology

Stack
PHP, Yii2 Framework, Bootstrap CSS, jQuery, Matomo Analytics
Frameworks
Yii2 PHP Framework
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced
  • CSRF tokens present in meta tags
  • Cookie consent banner implemented

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo
Transparency
basic

Site quality

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

Key observations

  1. Website is a public health research project site focused on youth sexual health in the Netherlands
  2. Content is comprehensive and well-structured with clear navigation
  3. No forms detected that collect personal data directly on the site
  4. Uses Matomo analytics with cookie consent banner indicating privacy awareness
  5. No explicit security headers found in HTML content
  6. WHOIS data shows domain is longstanding and consistent with site purpose
  7. No phone numbers or social media links found on the site
  8. Contact primarily via email and physical address
  9. No terms of service page 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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