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Security report for stadtwerke-hammelburg.de

Stadtwerke Hammelburg GmbH · Energy · Germany

Medium risk. 5 critical or high findings in Security headers, SSL/TLS and 1 other check.

Security score

57/100

Risk levelMedium

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

Stadtwerke Hammelburg GmbH is a regional utility company serving the Hammelburg area in Germany, providing essential services including electricity, gas, water, heat supply, and telecommunications via their HAB-Net DSL service. The company also operates local amenities such as the Saaletalbad swimming pool and parking facilities. Their market position is that of a trusted regional provider with a diversified portfolio catering to both residential and business customers. The website reflects a professional and consistent brand image with clear service offerings and customer support channels. Technically, the site is built on Joomla CMS with modern frontend technologies and includes a comprehensive GDPR-compliant cookie consent mechanism. Security posture is solid with HTTPS enforced and CSRF protections, though there is room for improvement in publishing explicit security policies and incident response information. Overall, the site is accessible, well-structured, and trustworthy, supporting the company's credibility in the regional energy and telecommunications sectors.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 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

5 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 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"

    • 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. 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

  3. 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-hammelburg.de

This scan found 23 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.

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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
62
Security headers
30
Email security
70
DNS health
60
Network security
20
GDPR outside view
100
Average
57

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 operates primarily in the energy and telecommunications sectors, offering a broad range of services from electricity and gas supply to high-speed internet and local public amenities. Their business model focuses on regional service provision with a strong community orientation, as evidenced by their support for local sports, culture, and social projects. The presence of a tariff calculator and energy-saving tips indicates customer-centric service innovation. Partnerships with local entities like Saaletalbad and network service providers enhance their ecosystem. The company targets local residents, businesses, and public institutions, positioning itself as a reliable and comprehensive utility provider. Growth indicators include digital service offerings and sustainability initiatives such as supplying 100% renewable hydropower for e-mobility charging stations.

Security posture

The website demonstrates a mature security posture with HTTPS encryption, CSRF token implementation, and a robust cookie consent framework that blocks external cookies and scripts until user consent is given. However, the absence of explicit security policies, incident response contacts, and security headers like Content-Security-Policy or X-Frame-Options suggests areas for enhancement. No vulnerabilities or exposed sensitive data were detected in the analysis. The site does not currently provide a vulnerability disclosure policy or security.txt file, which could improve transparency and trust. Overall, the security measures align well with GDPR compliance and general best practices but could be strengthened with formal documentation and additional HTTP headers.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact information, such as a security@ or abuse@ email address.
  3. Implement and configure security HTTP headers including Content-Security-Policy, X-Frame-Options, and X-XSS-Protection.
  4. Establish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Regularly audit and update third-party libraries and CMS components to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
Stadtwerke Hammelburg GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadtwerke Hammelburg GmbH
Description
Die Stadtwerke Hammelburg sind Mitwirker, Schrittmacher und Ideengeber – ein leistungsstarkes Unternehmen für Hammelburg und die Region.
Key services
Stromversorgung (Electricity supply), Gasversorgung (Gas supply), Wasserversorgung (Water supply), Wärmeversorgung (Heat supply), HAB-Net DSL (Highspeed internet, TV, telephone), Parkdeck Samuel-Sichel-Platz (Parking services), Elektrotankstelle (Electric vehicle charging stations), Saaletalbad (Local swimming pool and wellness services)
Content quality
good
Branding
consistent

Technology

Stack
Joomla CMS, jQuery, Bootstrap, Font Awesome, Flexslider, Magnific Popup, Helix3 Framework, GDPR Cookie Consent Plugin
Frameworks
Helix3
Platforms
Joomla
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CSRF token implemented in AJAX setup
  • Cookie consent with opt-in mechanism
  • Blocking of external cookies and scripts until consent

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
basic

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 regional utility services.
  3. Comprehensive cookie consent mechanism with opt-in and detailed categories.
  4. No explicit security policy or incident response information found.
  5. No terms of service page detected.
  6. Contact information is clearly presented with multiple channels.
  7. Social media presence on Facebook, Instagram, YouTube.
  8. No analytics or tracking scripts detected beyond cookie consent.
  9. Website uses Joomla CMS with modern frontend libraries.
  10. No advertising or affiliate marketing detected.
Technical notes

Notes

The website is built on Joomla CMS using the Helix3 framework, leveraging jQuery, Bootstrap, Font Awesome, and Flexslider for frontend functionality and styling. The site includes GDPR-compliant cookie consent scripts that manage user privacy preferences effectively. Performance is moderate with good mobile optimization and basic accessibility features. SEO is supported by proper meta tags and Open Graph data. The hosting provider is not explicitly identified, but the domain uses professional name servers. The site could benefit from enhanced accessibility features and performance optimizations to improve user experience further. No critical technical debt or outdated technologies were detected.
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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