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Security report for sense.info

Sense · Healthcare · Netherlands

Medium risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

75/100

Risk levelMedium

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

Sense.info is a well-established Dutch non-profit platform dedicated to sexual health education and anonymous advice. Founded in 2001, it serves primarily Dutch-speaking youth and young adults with comprehensive information on STIs, contraception, pregnancy, and sexuality. The website is supported by reputable partners including Soa Aids Nederland, Rutgers, GGD, and the Dutch Ministry of Health, reinforcing its credibility and market position as a leading sexual health resource in the Netherlands. The platform offers rich multimedia content, interactive tools, and personal stories to engage its audience effectively. Technically, the website employs modern web technologies such as React and Next.js, hosted via Hostnet, and integrates Matomo analytics with privacy-conscious tracking. The site is mobile-optimized, accessible, and SEO-friendly, providing a fast and user-friendly experience. Security measures include HTTPS enforcement, security headers, and domain transfer restrictions, although DNSSEC is not enabled. No critical vulnerabilities or exposed sensitive data were detected. From a security perspective, the site demonstrates a strong posture with good SSL configuration and best practices in place. However, explicit security policies and incident response information are not publicly available, and a security.txt file is absent. Privacy compliance is robust, with clear privacy and cookie policies and consent mechanisms aligned with GDPR requirements. Overall, Sense.info presents a trustworthy, professional, and secure platform with excellent content quality and business credibility. Strategic recommendations include enabling DNSSEC, publishing security policies, and adding vulnerability disclosure mechanisms to further enhance security and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

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 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 sense.info

This scan found 19 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
62
Security headers
65
Email security
70
DNS health
80
Network security
100
GDPR outside view
73
Average
75

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

Sense.info operates in the healthcare and non-profit sectors, focusing on sexual health education for youth in the Netherlands. Its competitive advantage lies in its authoritative content, government and NGO partnerships, and interactive digital tools. The business model is educational and advisory, funded likely through public or NGO sources rather than commercial revenue. The platform targets young people seeking confidential and reliable sexual health information. Growth indicators include recent content updates and active social media engagement. The partnership ecosystem includes major Dutch health organizations and government bodies, enhancing reach and legitimacy. Operationally, the site maintains high content quality and user engagement, positioning it as a trusted resource in its niche.

Security posture

The website exhibits a mature security posture with HTTPS enforced and multiple security headers implemented. Domain registration is privacy protected but consistent with a legitimate non-profit entity. No exposed credentials or vulnerabilities were found in the analyzed content. However, the absence of a published security policy and incident response contact limits transparency. The use of Matomo analytics indicates a privacy-conscious approach to user tracking. Recommendations include enabling DNSSEC and publishing explicit security and incident response policies to improve compliance and readiness. Overall, the security culture appears strong but could benefit from enhanced transparency and formalized vulnerability disclosure.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Publish a dedicated security policy and incident response plan on the website.
  3. Implement a security.txt file to facilitate responsible vulnerability disclosure.
  4. Regularly audit third-party scripts and analytics for potential vulnerabilities.
  5. Enhance transparency by providing contact details for security or abuse reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sense
Description
Sense is het centrum voor seksuele gezondheid. Je kunt er als je wilt anoniem terecht met vragen over soa, zwangerschap, anticonceptie en seksualiteit.
Key services
Sexual health information, Anonymous Q&A, Advice on STIs, contraception, pregnancy, Interactive tools and videos, Personal stories and experiences
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Matomo Analytics, Lite Vimeo Embed
Frameworks
Next.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Client transfer and update prohibited domain status
  • No DNSSEC enabled (recommend enabling)
  • No exposed sensitive data detected
  • Secure forms with required fields

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo
Marketing tools
Matomo Analytics
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 rich content in Dutch.
  2. Strong focus on sexual health education and anonymous advice.
  3. Multiple reputable partners and government affiliations.
  4. Use of modern web technologies and analytics with privacy considerations.
  5. No signs of malicious activity or security issues detected.
Technical notes

Notes

The website is built on a modern React and Next.js stack, ensuring server-side rendering and good performance. Hosting is provided by Hostnet, a reputable Dutch hosting provider. The site uses Matomo for analytics, emphasizing privacy. The design is responsive and accessible, with good SEO practices including meta tags and Open Graph data. The use of lite-vimeo-embed for video content optimizes media delivery. No technical debt or outdated libraries were detected. Performance is fast, and the site is well-structured for user navigation. Opportunities include enabling DNSSEC and formalizing security documentation to reduce technical risks.
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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