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Security report for stadtwerke-ahlen.de

Stadtwerke Ahlen · Energy · Germany

Medium risk. 5 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

66/100

Risk levelMedium

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

Stadtwerke Ahlen is a regional utility provider based in Germany, offering essential services including electricity, gas, water supply, and electromobility solutions. The company positions itself as a trusted local energy supplier with a focus on sustainability and customer service, supported by recognized certifications and awards. Their digital presence is built on the Neos CMS platform with modern PHP frameworks, integrating privacy-conscious analytics and cookie consent management. The website is well-structured, mobile-optimized, and accessible, providing clear navigation and comprehensive service information. Security posture is strong with HTTPS enforcement and secure customer portals, though explicit security headers and incident response contacts could be improved. Overall, the domain registration and website content are consistent and trustworthy, reflecting a legitimate and professional business.

Scanned

NIS2 and GDPR posture

GDPR outside view
43/ 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

5 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching stadtwerke-ahlen.de

This scan found 24 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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  • 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
52
Security headers
55
Email security
85
DNS health
60
Network security
100
GDPR outside view
43
Average
66

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 company targets private and business customers in the Ahlen region, offering competitive tariffs and services in energy and mobility sectors. Their business model revolves around local utility provision with additional services such as customer portals and electromobility infrastructure. The presence of partner domains related to network and transport services indicates a collaborative ecosystem. The company demonstrates growth and customer engagement through news updates and online services. Their market position is reinforced by awards and certifications, suggesting a strong reputation in the local market.

Security posture

The website demonstrates a mature security posture with HTTPS, cookie consent, and secure login portals. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of a public security policy, vulnerability disclosure, or incident response contacts indicates room for improvement in transparency and preparedness. The use of third-party scripts like Matomo and cookiemanager is managed with consent mechanisms, aligning with GDPR requirements. Security headers could be explicitly verified and enhanced to further harden the site.

Recommendations

  1. Implement and publish a formal security policy and vulnerability disclosure page to enhance transparency.
  2. Add explicit security headers such as X-Frame-Options and X-Content-Type-Options to improve protection against common web attacks.
  3. Provide clear incident response contact channels (e.g., security@ or abuse@ email addresses) for reporting security issues.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance data retention policy disclosures related to analytics and user data to improve privacy compliance.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadtwerke Ahlen
Description
Eine sichere Versorgung mit Strom, Gas und Wasser sowie weitere Services für die Stadt Ahlen. Fokus auf nachhaltige Elektromobilität, lokale Energieversorgung und Kundenservice.
Key services
Electricity supply, Gas and heating supply, Water supply, Electromobility solutions, Customer portal and services
Content quality
good
Branding
consistent

Technology

Stack
PHP, JavaScript, Matomo Analytics, Cookiemanager by Digitale Werke, hsag Chatbot
Frameworks
Neos CMS, Flow PHP framework
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of secure customer portal
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo
Marketing tools
Cookiemanager, hsag Chatbot
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professionally presented and relevant to local utility services.
  3. Strong presence of customer service and contact information.
  4. Use of modern CMS (Neos) and frameworks (Flow PHP).
  5. Good implementation of privacy and cookie policies with consent mechanisms.
  6. Presence of certifications and awards enhances trust.
  7. No visible security or privacy policy beyond GDPR compliance detected.
  8. No vulnerability disclosure or security.txt found.
  9. Social media presence on Facebook and Instagram.
  10. Use of Matomo analytics indicates privacy-conscious tracking.
Technical notes

Notes

The website is built on the Neos CMS platform using the Flow PHP framework, indicating a modern and flexible infrastructure. It integrates Matomo analytics for privacy-friendly tracking and a cookie management solution from Digitale Werke. The site is mobile-optimized and accessible, with good SEO practices including meta tags, Open Graph, and JSON-LD structured data. Hosting appears to be managed via kasserver.com nameservers. Performance is moderate with asynchronous script loading and responsive images. The chatbot integration from hsag adds interactive customer support capabilities. Overall, the technical stack supports a robust and user-friendly digital experience with opportunities to enhance security headers and incident response readiness.
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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