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Security report for swcas.de

Stadtwerke Castrop-Rauxel GmbH · Energy · Germany

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

Security score

71/100

Risk levelMedium

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

Stadtwerke Castrop-Rauxel GmbH operates as a regional energy utility provider focused on delivering renewable electricity, gas, heating, and electric vehicle charging solutions to residents and businesses in Castrop-Rauxel, Germany. The company emphasizes customer proximity, regional engagement, and environmental responsibility, positioning itself as a trusted local energy partner. Their website reflects a mature digital presence with integrated online calculators, customer portals, and comprehensive service information. Technically, the site is built on TYPO3 CMS with modern JavaScript and Bootstrap frameworks, ensuring good mobile optimization and accessibility. Security posture is solid with HTTPS enforced and cookie consent mechanisms in place, though formal security policies and incident response contacts are absent. Overall, the site demonstrates good GDPR compliance and business credibility, supported by certifications and clear contact details.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 100 · Low
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. 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 X-Frame-Options header

      Prevents clickjacking attacks

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

    • 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';…

  2. 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

  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 swcas.de

This scan found 23 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

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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
Security headers
45
Email security
70
DNS health
65
Network security
100
GDPR outside view
80
Average
71

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 holds a strong position as a local energy supplier with a focus on renewable energy products such as 100% green electricity and climate-neutral gas. Their business model centers on regional customer service, online self-service tools, and promotional programs like bonuses and subsidies. The presence of partner APIs and climate initiatives indicates an ecosystem approach. The target market includes residential households and commercial clients within the Castrop-Rauxel area. The website content and structure support customer engagement and transparency, contributing to growth and retention. Strategic partnerships with service providers and climate organizations enhance their market offering.

Security posture

The website exhibits a moderate to good security maturity level, with HTTPS enabled and a cookie consent framework that respects user privacy and GDPR requirements. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of published security policies, incident response contacts, and security headers suggests room for improvement in formalizing security governance and enhancing defense-in-depth. The use of third-party marketing and tracking tools like Facebook Pixel and Google Tag Manager is balanced with user consent mechanisms. Overall, the security posture supports business operations but would benefit from additional transparency and controls.

Recommendations

  1. Publish a formal security policy and incident response procedure on the website.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Implement and publicize a vulnerability disclosure policy or security.txt file.
  4. Provide contact details for a Data Protection Officer or security contact email.
  5. Regularly review third-party scripts and tracking tools to minimize privacy risks and improve transparency.

Contact details published on the site

Addresses
Legal name
Stadtwerke Castrop-Rauxel GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadtwerke Castrop-Rauxel GmbH
Description
Die Stadtwerke Castrop-Rauxel stehen für Kundennähe und Regionalität. Wir sind Ihr Partner für Strom, Gas und Wärme.
Key services
Electricity supply (Ökostrom), Gas supply (Klimagas), Heating electricity (Heizstrom), Electric vehicle charging electricity (Ökoladestrom), Customer service and support, Online customer portal
Content quality
good
Branding
consistent

Technology

Stack
TYPO3 CMS, JavaScript, Bootstrap, Google Tag Manager, sgalinski Cookie Opt In
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data found

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Facebook
Tracking pixels
Facebook Pixel
Marketing tools
Facebook Marketing
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 challenge.
  2. Comprehensive cookie consent mechanism implemented with detailed cookie categories.
  3. Multiple forms for service calculations and customer interactions present.
  4. Strong focus on renewable energy products and local customer service.
  5. Use of TYPO3 CMS and integration with external APIs for calculators.
  6. Clear contact information and physical address provided.
  7. Social media presence on Facebook linked.
  8. No explicit security policy or incident response contact found.
  9. Good GDPR compliance with clear privacy and cookie policies.
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website leverages TYPO3 CMS, a robust and widely used content management system, combined with Bootstrap and custom JavaScript for responsive design and interactive features. Integration with external APIs (e.g., Gelsenwasser) enables dynamic energy calculators enhancing user experience. Performance is moderate with compressed assets and asynchronous script loading, though some optimization opportunities exist. Accessibility and SEO are well addressed with proper meta tags, structured data (JSON-LD), and language declarations. The technical infrastructure supports scalability and regional service delivery but could improve with enhanced security headers and formal 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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