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Security report for sw-nuertingen.de

Stadtwerke Nürtingen GmbH · Energy · Germany

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

Security score

65/100

Risk levelMedium

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

Stadtwerke Nürtingen GmbH is a regional utility company based in Nürtingen, Germany, providing essential services including electricity, gas, water, district heating, and highspeed internet. The company positions itself as a reliable energy provider with a strong commitment to regional economic support and sustainability, offering additional services such as swimming pools and e-mobility solutions. The website reflects a medium-sized enterprise with a professional digital presence, leveraging modern CMS technology (Neos) and adhering to GDPR compliance with clear privacy and cookie policies. Social media engagement via Facebook and Instagram further supports community interaction. Technically, the website is built on a modern PHP framework with Neos CMS, featuring responsive design and accessibility considerations. The site employs cookie consent mechanisms and uses external scripts for cookie management, indicating a mature approach to privacy. Security posture is good with HTTPS enforced and no visible vulnerabilities or exposed sensitive data, though some security headers could be improved. No formal security policy or incident response contacts are published, representing an area for enhancement. Overall, the website is trustworthy, professionally maintained, and serves its target audience effectively. The domain WHOIS data is limited but consistent with the business profile. No WAF or blocking mechanisms interfere with content access, allowing full analysis. Recommendations include enhancing security headers, publishing a security policy, and establishing a vulnerability disclosure process to further strengthen security and trust.

Scanned

This is an earlier scan of sw-nuertingen.de. View the latest report

NIS2 and GDPR posture

GDPR outside view
55/ 100 · Medium
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 sw-nuertingen.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
70
DNS health
60
Network security
100
GDPR outside view
55
Average
65

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 Nürtingen GmbH operates as a regional energy and utility provider with diversified offerings including electricity, gas, water, district heating, telecommunications, and community services like swimming pools. Their business model focuses on regional supply and sustainability, targeting residents and businesses in Nürtingen. The company leverages local infrastructure and digital services to maintain market position. The website indicates a medium-sized enterprise with a focus on customer service and digital engagement. Partnerships with local network providers (nt-net.info) and use of modern CMS technology support operational efficiency. The company maintains a clear contact and service structure, supporting customer retention and growth. No parent or subsidiary companies were identified. The business demonstrates a stable regional presence with potential for expansion in new energy and telecommunication sectors.

Security posture

The website demonstrates a good security posture with HTTPS enabled and no visible exposure of sensitive data. Cookie consent mechanisms are implemented in compliance with GDPR. However, some standard security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options are not explicitly visible and should be implemented to enhance protection against common web attacks. No vulnerability disclosure or incident response information is published, which limits transparency and readiness for security incidents. The site uses modern frameworks and avoids outdated or vulnerable libraries. Overall, the security maturity is moderate to good, with room for improvement in formal policies and header configurations.

Recommendations

  1. Implement and enforce security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a formal security policy and incident response contact information on the website.
  3. Establish and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Regularly audit third-party scripts and cookie management tools for security and privacy compliance.
  5. Enhance monitoring and logging to detect and respond to potential security incidents promptly.

Contact details published on the site

Addresses
Legal name
Stadtwerke Nürtingen GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadtwerke Nürtingen GmbH
Description
Die Stadtwerke Nürtingen GmbH ist ein regionaler Energieversorger für Nürtingen, der Strom, Gas, Wasser, Wärme und Internetdienstleistungen anbietet. Sie engagieren sich für Versorgungssicherheit und regionale Wirtschaftsförderung.
Key services
Electricity supply, Gas supply, Water supply, District heating, Highspeed Internet, Swimming pools and sauna facilities, E-mobility services
Content quality
good
Branding
consistent

Technology

Stack
PHP, JavaScript, CSS, HTML5
Frameworks
Neos CMS, Flow PHP framework
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner
  • No exposed sensitive data in HTML
  • Use of secure forms with labels and aria attributes

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
cookiemanager.digitale-werke.de
Marketing tools
Cookie consent management
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 a regional utility provider.
  3. Comprehensive contact information and customer service details are provided.
  4. Cookie consent and privacy policies are implemented in compliance with GDPR.
  5. No explicit security policy or incident response information is published.
  6. Use of Neos CMS and Flow PHP framework indicates modern CMS technology.
  7. Social media presence on Facebook and Instagram supports community engagement.
  8. No suspicious or malicious content detected.
  9. Website supports accessibility features and mobile optimization.
Technical notes

Notes

The website is built on the Neos CMS platform using the Flow PHP framework, indicating a modern and flexible content management system. The front-end uses standard HTML5, CSS, and JavaScript with responsive design and accessibility features. External scripts for cookie management are loaded asynchronously to optimize performance. The site includes structured data in JSON-LD format for SEO and breadcrumb navigation. Performance is moderate with no major issues detected, and mobile optimization is good. The technical stack is well maintained with no signs of deprecated technologies or technical debt. Hosting provider details are not explicitly disclosed. Overall, the technical infrastructure supports the business needs effectively with opportunities to improve security headers and formalize security practices.
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

Earlier scans of this domain

  1. 65/100Medium32 findingsView report
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