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Security report for stadtwerke-bielefeld.de

Stadtwerke Bielefeld · Energy · Germany

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

56/100

Risk levelMedium

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

Stadtwerke Bielefeld is a regional utility company providing energy, gas, water, and district heating services to the Bielefeld region in Germany. The website presents a comprehensive offering of services tailored to both private and business customers, including energy tariffs, heating solutions, water supply, and energy consulting. The company maintains a strong regional presence with a clear focus on customer service and sustainability. Technically, the website is built on TYPO3 CMS, leveraging modern web technologies and includes GDPR-compliant cookie consent mechanisms. However, explicit privacy policy and terms of service documents were not found in the provided content, which is a gap in compliance and transparency. Security posture is moderate with HTTPS usage and consent management but lacks visible security headers and incident response contact information. Overall, the website is professional, well-structured, and trustworthy, but could improve in privacy and security documentation to enhance compliance and user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 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

6 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

    • 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. 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

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

Keep watching stadtwerke-bielefeld.de

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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
95
Security headers
40
Email security
75
DNS health
65
Network security
20
GDPR outside view
40
Average
56

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 stadtwerke-bielefeld.de, from OffSeq Breach.

Total records
306
Employees
0
Customers
295
Third parties
11
Weak passwords
14%

22 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 stadtwerke-bielefeld.de.

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Technical appendix

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

Business context

Business profile

The company operates as an essential regional utility provider in the energy sector, serving residential and commercial customers with electricity, gas, heating, and water services. Its business model is based on regional utility supply and customer service, supported by digital platforms for tariff selection and service management. The presence of partner domains for mobility, telecommunication, and appointment scheduling indicates a diversified service ecosystem. The company targets local customers in Bielefeld and surrounding areas, positioning itself as a reliable and sustainable energy provider. Growth indicators include digital service offerings and energy consulting. The company appears to have a stable market position with strong regional branding and customer engagement.

Security posture

The website demonstrates a basic to moderate security posture. It uses HTTPS and a consent management platform to comply with GDPR cookie requirements. However, no explicit privacy policy or terms of service pages were detected, which are critical for legal compliance and user trust. There is no evidence of security headers such as Content-Security-Policy or Strict-Transport-Security in the provided data. No incident response or abuse contact information is visible, and no vulnerability disclosure or security.txt files were found. The use of third-party scripts like Google Tag Manager and Facebook Pixel introduces tracking but is managed via consent. Overall, the security posture is adequate but could be improved by publishing comprehensive privacy and security policies, adding security headers, and providing clear incident response contacts.

Recommendations

  1. Publish a comprehensive privacy policy page clearly accessible from the homepage.
  2. Add terms of service and security policy documents to enhance transparency and compliance.
  3. Implement and configure security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Provide explicit contact information for security incidents and designate a data protection officer contact.
  5. Regularly review and audit third-party scripts and tracking technologies to minimize privacy risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadtwerke Bielefeld
Description
Entdecke Angebote zu Energieversorgung, Wasser und vielseitigen Services für die Region Bielefeld ✅ Für dich regional vor Ort.
Key services
Electricity supply, Gas supply, District heating (Fernwärme), Water supply, Energy consulting, Customer service portals, Telecommunication and mobility services
Content quality
good
Branding
consistent

Technology

Stack
TYPO3 CMS, Bootstrap Package, Google Tag Manager, Consentmanager.net CMP, Facebook Pixel
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
70/100
Good practices seen
  • Use of HTTPS (implied by canonical URL https://)
  • Consent management platform for GDPR compliance

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Consentmanager.net CMP
Transparency
basic

Site quality

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

Key observations

  1. Website is a regional utility provider for Bielefeld, Germany.
  2. Content is comprehensive for energy, gas, water, and related services.
  3. Uses TYPO3 CMS with modern web technologies.
  4. Includes GDPR-compliant cookie consent mechanism.
  5. No explicit privacy policy or terms of service found in the provided content.
  6. No direct contact emails or phone numbers found in the HTML snippet.
  7. No security.txt or vulnerability disclosure page detected.
  8. No explicit security headers detected in the provided data.
  9. External links include trusted domains related to ordering, planning, and partner services.
  10. Tracking includes Facebook Pixel and Google Tag Manager.
Technical notes

Notes

The website is built on TYPO3 CMS, a mature and widely used content management system, using the Bootstrap package for responsive design. It employs modern web standards including CSS and JavaScript modules, and integrates Google Tag Manager and Facebook Pixel for analytics and marketing. The site is mobile optimized with good accessibility and SEO practices, including meta tags and structured data (JSON-LD). Performance is moderate, with preloading of fonts and scripts. The site uses a consent management platform to handle GDPR cookie compliance. Hosting provider details are not explicit in the data. There is no indication of outdated or vulnerable libraries in the provided content. Overall, the technical infrastructure is solid but could benefit from enhanced security configurations and more explicit privacy 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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