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Security report for marien-grundschule.de

Katholische Marien-Grundschule · Education · Germany

Medium risk. 4 critical or high findings in Security headers, SSL/TLS and 1 other check.

Security score

61/100

Risk levelMedium

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

Katholische Marien-Grundschule is a small Catholic primary school located in Berlin, Germany, affiliated with the Archdiocese of Berlin. The school provides education primarily for children with specific support needs, emphasizing a holistic and values-based approach. The website serves as an information portal for parents, students, and the community, offering details about school services, events, and contact information. The site is well-structured and professionally maintained, reflecting the institution's commitment to transparency and community engagement. Technically, the website is built on Joomla CMS with modern plugins and demonstrates good mobile responsiveness and SEO practices. Security posture is solid with HTTPS enforced and GDPR-compliant cookie consent mechanisms in place, although explicit security policies and incident response contacts are absent. Overall, the domain registration and website content align well, indicating a trustworthy and legitimate educational institution.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 100 · Low
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

4 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. 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
    • High

      Weak SSL Key Length

      SSL certificate uses 384-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

  3. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • High

      High-Risk Service Exposed: FTP

      Port 21 (FTP) is publicly accessible - FTP - Often unencrypted file transfer

      What to do: Consider restricting access to FTP or implementing strong authentication

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

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

Keep watching marien-grundschule.de

This scan found 21 issues across 5 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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  • 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
42
Security headers
55
Email security
80
DNS health
70
Network security
20
GDPR outside view
100
Average
61

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

The school operates within the education sector, targeting families and children in the Berlin area. Its business model is non-commercial, focusing on providing primary education with a Catholic ethos. The institution benefits from partnerships with the Archdiocese of Berlin and related organizations, enhancing its community presence and support network. The website reflects a stable and consistent brand identity with clear communication channels. Revenue streams are likely public funding and donations facilitated through affiliated fundraising platforms. The partnership ecosystem includes school networks, daycare providers, and support associations, indicating a collaborative operational model.

Security posture

The website demonstrates a mature security posture for an educational institution. HTTPS is properly configured, and cookie consent mechanisms comply with GDPR requirements. No security headers were explicitly detected in the provided data, suggesting room for improvement. There is no visible security policy or incident response information, which could be enhanced to improve transparency and preparedness. No vulnerabilities or exposed sensitive data were found in the HTML content. The absence of analytics and tracking scripts beyond cookie management reduces privacy risks. Overall, the site is secure but could benefit from additional security best practices and documentation.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and data protection measures.
  2. Provide clear incident response contact information, such as a security or abuse email address.
  3. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Add security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection.
  5. Improve accessibility features to meet higher standards and ensure inclusivity for all users.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Katholische Marien-Grundschule
Description
Kath. Schule St. Hildegard. Staatlich anerkannte Grund- und Oberschule für Kinder und Jugendliche mit spezifischem Förderbedarf.
Key services
Primary education, Special needs support, Extracurricular projects and events
Content quality
good
Branding
consistent

Technology

Stack
Joomla CMS, jQuery, Chosen jQuery plugin, Bootstrap (implied by classes and carousel), GDPR Cookie Consent plugin
Frameworks
Joomla
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in mechanism
  • No exposed sensitive data in HTML
  • CSRF token present in scripts

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a well-maintained educational institution site.
  2. Clear GDPR compliance with cookie consent and privacy policy.
  3. No visible security policy or incident response information.
  4. No terms of service page found.
  5. No analytics or tracking scripts detected beyond cookie consent.
  6. No advertising networks detected except an affiliate link to bildungsspender.de.
  7. Contact information is clearly presented and consistent.
  8. Site uses Joomla CMS with modern plugins and responsive design.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website uses Joomla CMS with jQuery and Chosen plugins, indicating a moderately modern technology stack. The presence of Bootstrap-like classes and a responsive carousel suggests good mobile optimization. The site loads scripts asynchronously or deferred where appropriate, aiding performance. SEO is supported by proper meta tags and structured JSON-LD data. No major technical debt or deprecated technologies were detected. Hosting provider details are not explicitly available. Performance is moderate, with potential for optimization. Accessibility is basic but could be improved. Overall, the technical infrastructure supports the business needs effectively with opportunities for modernization and enhanced security.
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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