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Security report for marienschule-berlin.de

Kath. St. Marien - Oberschule Berlin · Education · Germany

Medium risk. 3 critical or high findings in Security headers, SSL/TLS and 1 other check.

Security score

65/100

Risk levelMedium

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

Kath. St. Marien - Oberschule Berlin is a Catholic secondary school located in Berlin Neukölln, Germany, offering integrated secondary education and gymnasium programs. The website serves as an information platform for students, parents, and the local community, providing details about school life, events, job offers, and administrative services. The school is sponsored by the Archdiocese of Berlin, which is reflected in the website's branding and partner links. Technically, the site is built on Joomla CMS with modern web technologies including jQuery and Bootstrap, and it incorporates GDPR-compliant cookie consent mechanisms. The site is mobile-optimized and provides a good user experience with clear navigation and relevant content. Security posture is solid with HTTPS enforced and cookie consent implemented, though formal security policies and incident response contacts are not published. Overall, the domain registration data aligns well with the website content, indicating legitimacy and trustworthiness.

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

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. 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

  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

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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
55
Email security
80
DNS health
70
Network security
20
GDPR outside view
100
Average
65

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 in the education sector, targeting students and families in the Berlin area. Its business model is non-commercial, focused on providing quality secondary education under Catholic values. The website supports community engagement and transparency with event calendars, news, and partner information. Partnerships with the Archdiocese and related educational networks strengthen its position. The site does not appear to monetize heavily beyond affiliate support via Bildungsspender. Growth indicators include active event management and job postings. The partnership ecosystem includes official church and educational organizations, enhancing credibility.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS and GDPR-compliant cookie consent. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of published security policies, incident response contacts, and security headers suggests room for improvement. The site blocks external cookies and session cookies appropriately, indicating awareness of privacy and security best practices. No analytics or tracking scripts beyond cookie management were found, reducing privacy risks. Overall, the security posture is adequate for an educational institution website but could benefit from formalized policies and enhanced HTTP security headers.

Recommendations

  1. Publish a formal security policy and incident response plan accessible on the website.
  2. Add security HTTP headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Provide clear contact information for security incidents or abuse reports.
  4. Regularly audit third-party scripts and plugins for vulnerabilities and updates.
  5. Enhance accessibility features to improve compliance and user experience for all visitors.

Contact details published on the site

Addresses
Legal name
Katholische Schule St. Marien – Oberschule
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Kath. St. Marien - Oberschule Berlin
Description
Die katholische Sankt Marien Oberschule in Berlin Neukölln stellt sich vor. Die Seite dient als Informationsplattform für alle Interessenten.
Key services
Secondary education, Information platform for school community, Event announcements, Job offers, School administration services
Content quality
good
Branding
consistent

Technology

Stack
Joomla CMS, jQuery, 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
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in mechanism
  • Blocking of external cookies domains
  • Session cookie blocking enabled

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 uses Joomla CMS with GDPR-compliant cookie consent.
  2. Clear contact information including phone, email, and physical address is provided.
  3. No terms of service page detected.
  4. No explicit security or incident response policies published.
  5. No analytics or tracking scripts detected beyond cookie consent management.
  6. Content is relevant to education and school community.
  7. No suspicious or malicious content found.
  8. External links mostly to partner or related educational domains.
  9. Cookie consent includes opt-in and category selection for essential and external media cookies.
Technical notes

Notes

The website uses Joomla CMS with jQuery and Bootstrap for frontend components, including a carousel and responsive navigation. The GDPR cookie consent plugin is integrated with opt-in and category-based controls. The site loads multiple CSS and JS assets efficiently and uses modern HTML5 markup. Performance is moderate with no obvious blocking scripts. Mobile optimization is good with responsive design elements. SEO is supported by meta tags, structured data (JSON-LD), and semantic HTML. Accessibility is basic but could be improved with ARIA roles and better keyboard navigation support. Hosting provider details are not explicitly identified from the content. Overall, the technical infrastructure is solid but could benefit from modernization and enhanced security headers.
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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