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Security report for stadtwerke-sh.de

Stadtwerke SH GmbH & Co. KG · Energy · Germany

Medium risk. 2 critical or high findings in SSL/TLS and Network security.

Security score

64/100

Risk levelMedium

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

Stadtwerke SH GmbH & Co. KG is a regional utility company serving northern Germany, specifically Schleswig-Holstein, providing energy, gas, water, fiber optic internet, and related services. The company operates as a consortium of local utilities including Stadtwerke Schleswig, Eckernförde, and Rendsburg, positioning itself as a key regional energy and infrastructure provider. Their website reflects a professional and accessible digital presence, built on TYPO3 CMS, with a focus on user experience and compliance with privacy regulations through Cookiebot integration. The site offers clear navigation, accessibility options, and comprehensive service information tailored to residents and businesses in the region. Technically, the website is well-structured with modern technologies, good mobile optimization, and SEO practices, although some security headers are not explicitly detected in the provided data. Security posture is solid with HTTPS enforced and no visible vulnerabilities, but could be improved by adding explicit security policies and headers. Overall, the domain registration and WHOIS data align with the business identity, indicating a trustworthy and legitimate online presence.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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

2 findings rated critical or high. Fix these first.

  1. 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

  2. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • High

      High-Risk Service Exposed: FTP

      Port 21 (FTP) is publicly accessible - FTP - Often unencrypted file transfer

      What to do: Consider restricting access to FTP or implementing strong authentication

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

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

Keep watching stadtwerke-sh.de

This scan found 22 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
72
Security headers
90
Email security
55
DNS health
65
Network security
20
GDPR outside view
83
Average
64

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

Stadtwerke SH operates in the energy sector as a medium-sized regional utility provider with a diversified portfolio including electricity, natural gas, e-mobility, fiber optics, water, and wastewater services. Their business model focuses on serving local communities with essential infrastructure and energy solutions. The company benefits from partnerships with local network operators and maintains a strong regional footprint. The website content and navigation suggest a customer-centric approach with emphasis on service transparency and accessibility. Growth indicators include digital tariff calculators and modernized customer portals. The partnership ecosystem includes sister utilities in Schleswig, Eckernförde, and Rendsburg, enhancing regional service integration.

Security posture

The website demonstrates a mature security posture with HTTPS enabled and a robust cookie consent mechanism via Cookiebot, ensuring GDPR compliance. No exposed sensitive data or vulnerable libraries were detected in the analysis. However, the absence of explicit security headers such as Content Security Policy, HSTS, and X-Frame-Options suggests room for improvement. There is no visible security policy or incident response information published, which could enhance transparency and readiness. The site does not appear to have a vulnerability disclosure program or security.txt file. Overall, the security measures are adequate for a utility website but could be strengthened to align with best practices and regulatory expectations.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to mitigate common web attacks.
  2. Publish a clear security policy and incident response contact information to improve transparency and user trust.
  3. Establish a vulnerability disclosure program or security.txt file to facilitate responsible reporting of security issues.
  4. Regularly audit third-party scripts and libraries to ensure no vulnerabilities are introduced.
  5. Enhance monitoring and logging to detect and respond to security incidents promptly.

Contact details published on the site

Addresses
Legal name
Stadtwerke SH GmbH & Co. KG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadtwerke SH GmbH & Co. KG
Description
Die Stadtwerke SH sind das Gemeinschaftsunternehmen der Stadtwerke Schleswig, Eckernförde und Rendsburg
Key services
Electricity supply, Natural gas supply, E-Mobility solutions, Photovoltaik, Fiber optic internet, Water supply, Wastewater services, Heating solutions
Content quality
good
Branding
consistent

Technology

Stack
TYPO3 CMS, Cookiebot, jQuery (implied by Cookiebot usage), SVG graphics
Frameworks
TYPO3
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

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

Analytics and tracking

Services
Cookiebot consent tracking
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Cookiebot pixel tracker
Marketing tools
Cookiebot
Transparency
good

Site quality

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

Key observations

  1. Website uses TYPO3 CMS with modern cookie consent management
  2. Clear business and contact information provided
  3. No signs of malicious or suspicious activity
  4. Good accessibility and mobile optimization
  5. No explicit security headers detected in provided data
  6. No visible security or incident response policies
Technical notes

Notes

The website is built on TYPO3 CMS, a mature and widely used content management system, indicating a stable and scalable infrastructure. The use of Cookiebot for consent management reflects compliance with privacy regulations. Hosting is managed via DomainControl nameservers, suggesting professional domain management. The site includes accessibility features such as skip links, sign language, and easy language options, enhancing usability. Performance is moderate with compressed CSS and responsive images, though no explicit performance metrics were provided. The technical stack is modern but could benefit from additional security hardening and performance optimization. The presence of tariff calculators and interactive forms indicates a functional and user-oriented design.
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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