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Security report for muelheim-ruhr.de

Stadt Mülheim an der Ruhr · Government · Germany

Medium risk. 4 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

73/100

Risk levelMedium

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

The website cms.muelheim-ruhr.de serves as the official digital portal for the city of Mülheim an der Ruhr, Germany. It provides comprehensive information and services related to city administration, cultural events, social services, urban development, and citizen engagement. The site targets residents, visitors, and local businesses, positioning itself as a trusted government resource with a broad range of public services and community information. The content is well-maintained, professionally presented, and highly relevant to its audience. Technically, the site is built on Drupal 11, leveraging modern web technologies such as Bootstrap 5, jQuery, and Matomo for privacy-conscious analytics. The hosting is managed via Versatel nameservers, indicating a stable and professional infrastructure. The site demonstrates good mobile optimization, accessibility, and SEO practices, ensuring a positive user experience across devices. From a security perspective, the website enforces HTTPS and employs a cookie consent mechanism via Klaro, reflecting GDPR compliance. While explicit security headers are not visible in the HTML, the platform's inherent security features and absence of exposed sensitive data suggest a solid security posture. However, the site lacks published incident response contacts and vulnerability disclosure policies, which could be improved to enhance transparency and readiness. Overall, cms.muelheim-ruhr.de is a high-quality, trustworthy municipal website with strong content, technical maturity, and privacy compliance. Strategic recommendations include enhancing security header implementation, publishing security policies, and maintaining regular updates to Drupal and third-party components to sustain security and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
48/ 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

4 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 Cookie Policy found

      GDPR requires clear information about cookie usage

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

  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 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';…

  3. 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

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

Keep watching muelheim-ruhr.de

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.

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

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Full report

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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
77
Security headers
75
Email security
70
DNS health
70
Network security
100
GDPR outside view
48
Average
73

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 city of Mülheim an der Ruhr operates this website as a central hub for municipal services and information dissemination. Its market position is that of an essential government entity providing public services digitally. The business model is non-commercial, focused on public administration and citizen engagement. Key services include administrative information, event calendars, job postings, and cultural content. The site integrates with partner domains such as service.muelheim-ruhr.de and kultur.muelheim-ruhr.de, indicating a networked ecosystem of municipal digital services. The presence of official social media channels supports community outreach and transparency. Growth indicators include regular content updates and adoption of modern web technologies. The site reflects a mature digital presence consistent with large municipal governments in Germany.

Security posture

The website exhibits a good security posture with mandatory HTTPS, cookie consent management, and use of privacy-respecting analytics (Matomo). No critical vulnerabilities or exposed sensitive data were detected in the HTML content. The Drupal CMS platform provides a secure foundation when kept up to date. However, the absence of explicit security headers in the visible HTML and lack of published incident response or vulnerability disclosure policies represent areas for improvement. The site does not expose any suspicious scripts or third-party content that could introduce risks. Overall, the security maturity is solid but could be enhanced by formalizing security policies and improving HTTP header configurations.

Recommendations

  1. Implement and explicitly configure security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a security.txt file or dedicated vulnerability disclosure page to facilitate responsible reporting.
  3. Provide clear incident response contact information, including dedicated security or abuse email addresses.
  4. Maintain regular updates of Drupal core and contributed modules to mitigate vulnerabilities.
  5. Continue monitoring third-party scripts and external content for security and privacy compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadt Mülheim an der Ruhr
Description
Official website of the city of Mülheim an der Ruhr providing news, services, and information about city administration, culture, living, and urban development.
Key services
City news and announcements, Service portal for citizens, Event calendar, Job offers, Information on city departments and administration, Cultural and social services
Content quality
excellent
Branding
consistent

Technology

Stack
Drupal 11, Matomo Analytics, Bootstrap 5, jQuery, Klaro Consent Manager, Slick Carousel
Frameworks
Drupal
Platforms
Web
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected
  • Secure forms with CSRF tokens (implied by Drupal)

Analytics and tracking

Services
Matomo
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Matomo
Transparency
basic

Site quality

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

Key observations

  1. Website is a well-structured official municipal government portal.
  2. Content is comprehensive and regularly updated with news and announcements.
  3. Strong focus on user accessibility and mobile optimization.
  4. Use of open source technologies and privacy-respecting analytics (Matomo).
  5. Clear cookie consent mechanism implemented with Klaro.
  6. No signs of suspicious or malicious content.
  7. Social media presence on official channels enhances trust.
  8. No explicit security or incident response policies published on site.
Technical notes

Notes

The website is built on a modern Drupal 11 CMS with Bootstrap 5 for responsive design and jQuery for client-side scripting. It uses Matomo analytics configured to disable cookies, enhancing privacy compliance. The site includes a Klaro consent manager for GDPR cookie consent. Hosting is managed through Versatel nameservers, indicating a professional hosting environment. Performance is moderate, with good mobile optimization and accessibility features. The site structure is clear with well-organized navigation menus and search functionality. There is no evidence of technical debt or deprecated technologies. Opportunities exist to enhance security headers and formalize security policies to further strengthen the technical infrastructure.
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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