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Security report for mannheim.de

Stadt Mannheim · Government · Germany

Low risk. 2 critical or high findings in GDPR outside view and SSL/TLS.

Security score

76/100

Risk levelLow

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

The website www.mannheim.de serves as the official digital portal for the city of Mannheim, Germany. It provides comprehensive information and services related to municipal administration, citizen services, economic development, culture, education, tourism, and career opportunities. The site targets residents, businesses, tourists, and public service users, positioning itself as a key government resource with a broad service offering. The content is well-structured, multilingual, and accessible, reflecting a mature digital presence for a large municipal entity. Technically, the website is built on Drupal 10, utilizing modern web technologies such as Matomo for analytics, SVG icons, and slick carousel for UI elements. The site demonstrates good performance, mobile optimization, and accessibility features. Security is robust with HTTPS enforced, multiple security headers present, and consent-based tracking mechanisms implemented. However, explicit security policies and incident response contacts are not prominently published, and no vulnerability disclosure or security.txt files were found. Overall, the security posture is strong with no detected vulnerabilities or suspicious activity. Privacy compliance is well addressed with clear privacy and cookie policies and user consent mechanisms. The business credibility is high, supported by official domain registration, consistent branding, and transparent contact information. The site is safe for general audiences with no adult or questionable content. Strategically, the site could enhance trust and security culture by publishing dedicated security policies and incident response information, and by implementing a vulnerability disclosure program. Regular audits of third-party scripts and form input sanitization are recommended to maintain security integrity.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 100 · Medium
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

2 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.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  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

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

Keep watching mannheim.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.

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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
77
Security headers
85
Email security
60
DNS health
65
Network security
100
GDPR outside view
68
Average
76

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention mannheim.de, from OffSeq Breach.

Total records
203
Employees
10
Customers
170
Third parties
23
Weak passwords
4%

Latest record dated 2026-05-12 · 12 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for mannheim.de.

Select it in the checkout above.

Masked preview

  • –um.mannheim.de2026-05-12
  • –um.mannheim.de2025-08-04
  • –um.mannheim.de2025-07-25
  • –um.mannheim.de2025-07-20
  • –um.mannheim.de2025-07-19

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

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

Business context

Business profile

Mannheim.de operates as the official government portal for the city of Mannheim, providing essential municipal services and information. Its market position is that of a trusted public sector entity serving a large urban population. The business model is non-commercial, focused on public service delivery. Revenue streams are typical of municipal funding rather than commercial sales. The target customer segments include residents, local businesses, tourists, and job seekers. Growth indicators include ongoing digitalization efforts and multilingual support. The partnership ecosystem includes local institutions and cultural organizations. The website reflects a strategic focus on transparency, accessibility, and citizen engagement.

Security posture

The website exhibits a mature security posture with HTTPS enforced and a comprehensive set of security headers such as HSTS, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, and Content-Security-Policy. Tracking is done via Matomo with user consent, minimizing privacy risks. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of a published security policy and incident response contact limits transparency. No vulnerability disclosure mechanism or security.txt file was found, which could hinder coordinated vulnerability reporting. Overall, the site is secure but could improve in transparency and incident readiness.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and user guidance.
  2. Provide explicit incident response contact information, such as a security or abuse email address.
  3. Implement a vulnerability disclosure program and publish a security.txt file to facilitate responsible reporting.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance form input validation and sanitization to prevent injection attacks and data leaks.

Contact details published on the site

Addresses
Legal name
Stadt Mannheim
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadt Mannheim
Description
Official website of the city of Mannheim providing information and services related to municipal administration, citizen services, economy, culture, education, and tourism.
Key services
Citizen services, Economic development, Urban planning and city development, Education and culture, Tourism information, Career opportunities
Content quality
excellent
Branding
consistent

Technology

Stack
Drupal 10, Matomo Analytics, jQuery UI Autocomplete, Slick Carousel, SVG icons
Frameworks
Drupal
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent-based tracking with Matomo
  • No exposed sensitive data in HTML
  • Use of security headers

Analytics and tracking

Services
Matomo
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Matomo
Marketing tools
Matomo Analytics
Transparency
good

Site quality

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

Key observations

  1. Website is a well-maintained official municipal portal for Mannheim, Germany.
  2. Content is comprehensive, multilingual, and accessible.
  3. Strong privacy and cookie compliance with consent mechanisms.
  4. Use of modern web technologies and CMS (Drupal 10).
  5. No signs of malicious or suspicious activity.
  6. Security posture is strong with HTTPS and security headers.
  7. No explicit security policy or incident response page found.
  8. No vulnerability disclosure or security.txt detected.
  9. Contact information is clearly provided including email and phone.
  10. No WAF or blocking mechanisms detected.
Technical notes

Notes

The website is powered by Drupal 10, a modern and widely supported CMS, indicating a solid technical foundation. It uses Matomo for privacy-conscious analytics and employs SVG icons and slick carousel for a responsive and interactive user interface. The site is mobile-optimized and accessible, with proper meta tags and SEO considerations. Performance is moderate, likely due to rich media content such as sliders and images. There is no explicit hosting provider information, but the domain uses dedicated name servers consistent with municipal infrastructure. Technical risks are minimal but include the need for continuous monitoring of third-party components and ensuring compliance with evolving web standards.
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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