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Security report for post.lu

POST Luxembourg · Telecommunications · Luxembourg

Medium risk. 5 critical or high findings in GDPR outside view and Security headers.

Security score

75/100

Risk levelMedium

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

POST Luxembourg is the national postal and telecommunications operator in Luxembourg, offering a broad range of services including mobile telephony, internet subscriptions, television, postal delivery, and financial services. The website targets individuals, small businesses, and large enterprises, positioning itself as a comprehensive service provider in the Luxembourg market. The company maintains a strong brand presence with consistent and professional content tailored to its audience. Technically, the website is built on the Liferay CMS platform, leveraging modern JavaScript frameworks such as React and Alloy UI, and integrates cookie consent management via OneTrust, demonstrating a mature digital infrastructure. Security-wise, the site enforces HTTPS, employs standard security headers, and avoids exposing sensitive data, though it lacks publicly available security policies and vulnerability disclosure mechanisms. Overall, the website is trustworthy and professionally maintained, though the absence of WHOIS data and explicit security documentation slightly reduces domain registration trustworthiness.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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. 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

      Third-party services without privacy policy

      Detected services: Facebook, Twitter, LinkedIn, Google APIs

      What to do: Document all third-party data sharing in your privacy policy

  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
    • 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';…

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

Keep watching post.lu

This scan found 17 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
100
Security headers
45
Email security
80
DNS health
85
Network security
100
GDPR outside view
40
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

POST Luxembourg holds a leading position in Luxembourg's telecommunications and postal sectors, serving a diverse customer base from individuals to enterprises. Its business model integrates multiple revenue streams including mobile and internet subscriptions, postal services, and financial products. The company benefits from partnerships with entities like Deep and eboo, enhancing its service offerings. The website reflects a strategic focus on customer engagement through clear navigation, multilingual support, and integrated digital services such as webmail and package tracking. Growth indicators include the adoption of modern web technologies and compliance with GDPR through comprehensive privacy and cookie policies. The company’s ecosystem is robust, though further transparency in security and incident response could strengthen stakeholder confidence.

Security posture

The website demonstrates a solid security posture with enforced HTTPS, implementation of key security headers, and integration of cookie consent mechanisms aligned with GDPR requirements. No critical vulnerabilities or exposed sensitive information were detected in the HTML content. However, the absence of a publicly accessible security policy, incident response plan, or security.txt file indicates room for improvement in transparency and readiness for security incidents. The use of third-party scripts such as Dynatrace and Userlike chat widgets necessitates ongoing monitoring to mitigate supply chain risks. Overall, the security maturity is good but could be enhanced by publishing formal security documentation and establishing clear vulnerability disclosure channels.

Recommendations

  1. Publish a publicly accessible security.txt file to facilitate vulnerability reporting.
  2. Develop and display a comprehensive security policy and incident response plan on the website.
  3. Enhance accessibility features to meet higher compliance standards.
  4. Regularly audit and update third-party scripts to minimize security risks.
  5. Consider obtaining and displaying recognized security certifications to boost trust.

Contact details published on the site

Addresses
Legal name
POST Luxembourg
VAT number
LU 100 000 00
Registration number
B123456
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
POST Luxembourg
Description
POST Luxembourg propose des forfaits mobiles, abonnements Internet, télé, services postaux et financiers pour les particuliers, indépendants/PME et les grandes entreprises.
Key services
Mobile plans, Internet subscriptions, Television services, Postal services, Financial services
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery, Bootstrap, Liferay Portal, React, AUI (Alloy UI), OneTrust (cookie consent), Metal.js, Senna.js
Frameworks
Liferay
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

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

Analytics and tracking

Services
Dynatrace
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Dynatrace (ruxitagentjs)
Marketing tools
OneTrust, Userlike chat widget
Transparency
good

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 in French targeting Luxembourg residents.
  2. No WHOIS data available, possibly due to registry restrictions or query failure.
  3. Strong privacy and cookie compliance with OneTrust integration.
  4. Use of modern web technologies and frameworks including Liferay and React.
  5. No signs of malicious or adult content.
  6. Security headers and HTTPS are properly implemented.
  7. Contact information and business details are clearly presented on the site.
  8. No explicit security or incident response policies published.
  9. No security.txt or vulnerability disclosure page found.
Technical notes

Notes

The website is built on the Liferay CMS platform, utilizing a modern JavaScript stack including React and Alloy UI, which supports dynamic and responsive user experiences. Performance is moderate, with room for optimization in loading times and resource management. The site is mobile-optimized and includes SEO best practices such as meta tags and structured navigation. Accessibility is basic, suggesting potential improvements for users with disabilities. The integration of cookie consent tools and analytics services like Dynatrace indicates a mature approach to user privacy and monitoring. Technical risks are minimal but should be managed through continuous updates and security audits.
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. 69/100Medium29 findingsView report
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post.lu security report: 75/100, medium risk | Guard