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Security report for summerschool.lu

Education · Luxembourg

Medium risk. 9 critical or high findings in GDPR outside view, Email security and 1 other check.

Security score

58/100

Risk levelMedium

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

The website summerschool.lu serves as an informational portal for a summer school program in Luxembourg, primarily targeting students in fundamental and secondary education. The site is multilingual, supporting Luxembourgish, French, German, English, and Portuguese, reflecting inclusivity for the diverse population. The presence of official government logos and links to Luxembourg government domains strongly suggests this is a public sector or government-affiliated educational initiative. The site offers basic navigation and language selection but lacks detailed business or contact information on the homepage. From a technical perspective, the website uses modern JavaScript libraries such as jQuery 3.7.1 and integrates Google Tag Manager for analytics and tracking. The site loads external fonts from Adobe Typekit and uses HTTPS, although no advanced security headers were detected in the provided content. The site appears moderately optimized for mobile devices and has basic accessibility features. However, the absence of privacy and cookie policies and lack of visible security headers indicate room for improvement in compliance and security posture. Security-wise, the site does not expose sensitive data and uses HTTPS, but the lack of security headers and privacy notices reduces its overall security maturity. No vulnerabilities or malicious content were detected. The WHOIS data is unavailable due to query rate limits, but the domain is registered under Luxembourg's official DNS registry (RESTENA DNS-LU), which is typical for government domains and suggests legitimacy despite privacy protection. Overall, the website is a legitimate, government-affiliated educational resource with basic technical implementation and moderate security posture. Strategic improvements in privacy compliance, security headers, and contact transparency would enhance trust and compliance.

Scanned

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

9 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

  2. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  3. 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';…

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

Keep watching summerschool.lu

This scan found 25 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

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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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
85
Security headers
15
Email security
60
DNS health
75
Network security
100
GDPR outside view
10
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

Technical appendix

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

Business context

Business profile

Summerschool.lu operates as a government or public sector educational platform promoting summer school programs in Luxembourg. Its market positioning is niche, focusing on educational services for fundamental and secondary school students. The business model is informational and promotional, likely funded or managed by government education authorities. The target audience includes students, parents, and educators within Luxembourg. The site leverages partnerships with official government domains, enhancing credibility. Revenue streams are not evident, suggesting a non-commercial public service. Growth indicators are limited due to the static nature of the site. The partnership ecosystem includes official Luxembourg government portals, reinforcing its public sector alignment.

Security posture

The website demonstrates a basic security posture with HTTPS enabled and no visible exposure of sensitive data. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security reduces its defense-in-depth. No incident response or security policy information is provided, indicating limited transparency in security governance. The site uses third-party scripts including Google Analytics, which introduces privacy considerations. There is no evidence of GDPR compliance mechanisms such as cookie consent banners or privacy policies. Overall, the security maturity is moderate but could be significantly improved by implementing standard security headers, privacy notices, and incident response contacts.

Recommendations

  1. Implement comprehensive privacy and cookie policies with clear GDPR compliance statements.
  2. Add security headers including Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, and Strict-Transport-Security.
  3. Provide explicit contact information including emails and phone numbers for user support and incident reporting.
  4. Introduce a vulnerability disclosure policy or security.txt file to enhance transparency and trust.
  5. Conduct regular security audits of third-party scripts and ensure secure form handling with anti-CSRF protections.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
The website is dedicated to a summer school program in Luxembourg, targeting fundamental and secondary education levels. It provides language selection and navigation to different educational sections.
Key services
Information about summer school programs, Language selection for accessibility, Navigation to fundamental and secondary education sections
Content quality
basic
Branding
consistent

Technology

Stack
jQuery 3.7.1, Google Tag Manager (gtag.js), Adobe Typekit fonts
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
55/100
Good practices seen
  • Use of HTTPS assumed (based on URL scheme https://)
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
Google Analytics (via gtag.js)
Transparency
basic

Site quality

Design
basic
User experience
basic
Content relevance
basic
Navigation
good
Professionalism
basic
Trustworthiness
moderate

Key observations

  1. Website is a government-affiliated educational summer school portal for Luxembourg.
  2. No privacy, cookie, or terms of service policies found on the main page.
  3. No contact emails or phone numbers explicitly provided on the homepage.
  4. Uses modern JavaScript libraries and Google Analytics for tracking.
  5. No visible security headers or advanced security configurations detected.
  6. No WHOIS data available due to query rate limit; domain appears privacy protected.
  7. Content is safe and suitable for general audiences.
  8. Navigation and language selection features are implemented with basic UX.
  9. No forms with sensitive data collection visible except a contact form with AJAX submission.
  10. No social media links or company contact details found.
Technical notes

Notes

The website uses a lightweight technical stack centered on jQuery 3.7.1 and Google Tag Manager for analytics. Fonts are loaded from Adobe Typekit, ensuring consistent typography. The site is served over HTTPS, but no advanced security headers were detected in the provided content. The HTML structure is simple and functional, supporting multiple languages via URL parameters. Performance is moderate with no explicit optimization indicators. Accessibility is basic, with some ARIA labels present but no advanced features. SEO optimization is minimal, lacking meta descriptions or Open Graph tags. The site does not appear to use a CMS or complex backend frameworks. Hosting provider details are not discernible from the content. Overall, the technical implementation is adequate for a small government informational site but could benefit from modernization and enhanced security practices.
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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