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Security report for dns.lu

Fondation Restena · Technology · Luxembourg

Medium risk. 6 critical or high findings in GDPR outside view and Security headers.

Security score

68/100

Risk levelMedium

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

The website dns.lu is the official registry for domain names under the national .lu extension, managed by Fondation Restena. It serves as the authoritative source for domain registration, management, and security services related to .lu domains. The site targets individuals and organizations interested in registering or managing Luxembourg's national domains. The business model revolves around providing registry infrastructure and accrediting registrars, positioning itself as a critical national internet infrastructure entity. Technically, the website is built on Drupal 10, leveraging modern web technologies such as lazy loading images and social sharing tools. The site demonstrates good mobile optimization, accessibility, and SEO practices, although performance is moderate. Security-wise, the site enforces HTTPS and holds an ISO 27001 certification, indicating a mature security posture. However, explicit security headers and privacy/cookie policies are lacking, which are areas for improvement. The security posture is strong with no detected vulnerabilities or malicious content. The WHOIS data is limited due to query rate limiting, but the domain's legitimacy is supported by its official status and association with Fondation Restena. Overall, the site is trustworthy, professional, and serves an essential role in Luxembourg's internet infrastructure. Strategic recommendations include publishing clear privacy and cookie policies, adding security headers, providing incident response contacts, and implementing a security.txt file to enhance transparency and trust.

Scanned

This is an earlier scan of dns.lu. View the latest report

NIS2 and GDPR posture

GDPR outside view
10/ 100 · Critical
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

6 findings rated critical or high. Fix these first.

  1. GDPR outside view

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

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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

  2. 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

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

Keep watching dns.lu

This scan found 20 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
100
Security headers
55
Email security
60
DNS health
80
Network security
100
GDPR outside view
10
Average
68

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

Fondation Restena operates dns.lu as the official .lu domain registry, holding a unique market position as the national domain authority. The organization benefits from ISO 27001 certification, reinforcing its competitive advantage in security and trust. The business model is service-oriented, focusing on domain registration, DNS security (DNSSEC), and registrar accreditation. The target customers include businesses, individuals, and registrars within Luxembourg and internationally seeking .lu domains. Growth indicators include a stable number of registered domains and active accredited registrars. The partnership ecosystem includes Restena Foundation and accredited registrars. The website content and structure reflect a mature, well-managed operation with clear governance and compliance focus.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and ISO 27001 certification renewed as recently as 2025. Security best practices include secure form handling and DNSSEC promotion. However, the absence of explicit security headers such as Content-Security-Policy and Strict-Transport-Security is a minor gap. Privacy compliance is limited by the lack of visible privacy and cookie policies, which could expose the organization to regulatory scrutiny. Incident response and vulnerability disclosure mechanisms are not publicly documented, reducing transparency. Overall, the security culture appears strong but could benefit from enhanced communication and policy publication to align with best practices and regulatory expectations.

Recommendations

  1. Publish a comprehensive privacy policy and cookie consent mechanism to improve GDPR compliance.
  2. Implement and configure security headers including Content-Security-Policy, X-Content-Type-Options, and Strict-Transport-Security.
  3. Provide clear incident response and vulnerability disclosure information, including a security.txt file.
  4. Enhance contact information with dedicated security and abuse email addresses.
  5. Regularly audit and update WHOIS information to improve transparency and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Fondation Restena
Description
The website is the official registry for domain names under the national .lu extension, managed by Fondation Restena. It provides domain registration, management, and security services for .lu domains.
Key services
Domain name registration under .lu, Domain management, DNSSEC security services, Accreditation of registrars, WHOIS lookup and domain availability checks
Content quality
good
Branding
consistent

Technology

Stack
Drupal 10, Font Awesome, LazySizes (lazy loading images), AddToAny (social sharing)
Frameworks
Drupal
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Secure forms with CSRF tokens
  • ISO 27001 certification

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Marketing tools
AddToAny
Transparency
basic

Site quality

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

Key observations

  1. Official website for Luxembourg's .lu domain registry
  2. Content is in French with English alternate available
  3. Uses Drupal CMS with modern web technologies
  4. ISO 27001 certification indicates strong security posture
  5. No explicit privacy or cookie policies found on homepage
  6. Contact available via contact form and social media
  7. No WAF or blocking detected, full content accessible
  8. No suspicious or malicious content detected
  9. Good mobile and accessibility support
  10. Limited WHOIS data due to query rate limiting
Technical notes

Notes

The website is built on Drupal 10, a modern and widely supported CMS, ensuring maintainability and security updates. It uses lazy loading for images and integrates social sharing via AddToAny, enhancing user experience and engagement. The site is mobile optimized and accessible, with good SEO metadata including Open Graph tags. Performance is moderate, likely due to image sizes and Drupal overhead. No hosting provider details were detected, but the site uses HTTPS with a presumably strong SSL configuration. Technical debt appears low, but improvements in security headers and privacy compliance are recommended to reduce risk and improve trust.
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

Earlier scans of this domain

  1. 64/100Medium31 findingsView report
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