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Security report for bielefeld.de

Stadt Bielefeld · Government · Germany

Partial score · DNS & email only

74/100

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

The website www.bielefeld.de is the official digital presence of the city of Bielefeld, Germany, serving as a comprehensive portal for municipal services, community information, city development, culture, and events. It targets residents, visitors, and businesses, providing a wide range of services including appointment scheduling, public announcements, and career opportunities. The site is well-positioned as the authoritative source for city-related information and services. Technically, the site is built on Drupal 10 with Bootstrap framework, hosted likely by Deutsche Telekom, and integrates privacy-conscious analytics via Matomo with cookies disabled and DoNotTrack respected. The site demonstrates good mobile optimization, accessibility, and SEO practices, reflecting a mature digital infrastructure. From a security perspective, the site enforces HTTPS, uses cookie consent mechanisms, and follows privacy best practices. However, it lacks explicit security policies or incident response information and could improve by adding additional security headers and a vulnerability disclosure policy. Overall, the security posture is solid but could be enhanced. The risk assessment is low given the official nature, absence of suspicious content, and good privacy compliance. Strategic recommendations include strengthening security headers, publishing security policies, and enhancing transparency around incident response and vulnerability disclosures.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 100 · Low
Checks completed
6of 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 bielefeld.de

This scan found 18 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.

Daily monitoring

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
67
Email security
60
DNS health
65
Network security
100
GDPR outside view
80
Average
74

Not counted

  • Security headers: did not complete in this scan.
  • 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 bielefeld.de, from OffSeq Breach.

Total records
123
Employees
2
Customers
117
Third parties
4
Weak passwords
12%

Latest record dated 2026-06-15 · 6 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 bielefeld.de.

Select it in the checkout above.

Masked preview

  • –bielefeld.de2026-06-15
  • –.bielefeld.de2026-06-10

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

Bielefeld.de serves as a critical government portal, providing essential services and information to a large urban population. Its business model is public service oriented, funded and operated by the municipal government. The site supports citizen engagement, digital service delivery, and community outreach, positioning it as a key digital asset for the city. The presence of career pages and event calendars indicates active community involvement and municipal workforce engagement. Partnerships with local service providers and cultural institutions are evident through linked domains. The site’s comprehensive content and professional presentation support its market position as a trusted government resource.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, privacy-respecting analytics, and cookie consent mechanisms. No critical vulnerabilities or exposed sensitive data were detected. The absence of some security headers and lack of published security or incident response policies represent areas for improvement. The site respects GDPR requirements and provides clear privacy and cookie policies. Incident response readiness and vulnerability disclosure transparency could be enhanced to align with best practices for government websites.

Recommendations

  1. Implement additional HTTP security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to enhance protection against common web attacks.
  2. Publish a dedicated security policy and incident response page to improve transparency and preparedness.
  3. Introduce a vulnerability disclosure program or security.txt file to encourage responsible reporting of security issues.
  4. Continue maintaining and updating privacy and cookie consent mechanisms to ensure ongoing GDPR compliance.
  5. Regularly audit third-party scripts and libraries to avoid introducing vulnerabilities and ensure performance optimization.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadt Bielefeld
Description
Official website of the city of Bielefeld providing information and services related to city administration, community, development, culture, events, and citizen services.
Key services
Citizen service portal, Appointment scheduling, Public announcements, Event information, Career opportunities, News and press releases
Content quality
excellent
Branding
consistent

Technology

Stack
Drupal 10, Bootstrap, Matomo Analytics, ReadSpeaker
Frameworks
Bootstrap
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 for analytics
  • No cookies used by default for tracking
  • Use of Matomo with disabled cookies and DoNotTrack enabled

Analytics and tracking

Services
Matomo
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Matomo
Marketing tools
Matomo Analytics, ReadSpeaker
Transparency
basic

Site quality

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

Key observations

  1. Website is a comprehensive official city portal for Bielefeld, Germany.
  2. Content is rich, well-structured, and professionally presented.
  3. Strong privacy and cookie consent mechanisms are implemented.
  4. Use of modern CMS (Drupal 10) and frameworks (Bootstrap).
  5. Good accessibility and mobile optimization.
  6. No signs of malicious or suspicious content.
  7. Social media presence on official platforms enhances trust.
  8. No explicit security policy or incident response page found.
  9. WHOIS data is limited but consistent with hosting provider.
Technical notes

Notes

The website uses a modern and robust technology stack centered on Drupal 10 CMS and Bootstrap for responsive design. It integrates Matomo analytics configured for privacy compliance and ReadSpeaker for accessibility. Hosting appears to be managed by Deutsche Telekom, indicating reliable infrastructure. The site is mobile-optimized and accessible, with good SEO metadata. Performance is moderate, with potential for optimization. The technical implementation is solid with room for security header enhancements and formalized security documentation.
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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