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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 providing essential services including electricity, gas, water, district heating, and highspeed internet to the Nürtingen area in Germany. The company emphasizes regional economic support and customer-centric service, offering digital tools such as mobile apps and online customer portals to enhance user experience. Their market position is that of a trusted regional energy and telecommunications provider with a medium-sized operational footprint. Technically, the website is built on the Neos CMS platform using the Flow PHP framework, with modern JavaScript libraries and a responsive design ensuring good performance and accessibility. Security posture is solid with HTTPS enforced and cookie consent mechanisms in place, though some security headers could be improved and incident response information is not publicly detailed. Overall, the website is professional, trustworthy, and compliant with GDPR, serving a general audience without any adult or questionable content.

Scanned

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

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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

The company operates in the energy and telecommunications sectors, targeting both private and business customers in the Nürtingen region. Their business model focuses on regional utility provision combined with digital service delivery, including customer portals and mobile apps. The presence of social media channels and detailed contact information supports customer engagement and brand trust. No parent or subsidiary companies are indicated, suggesting an independent regional entity. The website content and structure reflect a well-organized service offering with clear navigation and relevant product highlights. Strategic partnerships appear limited but include related service domains such as nt-net.info for internet services.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and a cookie consent mechanism aligned with GDPR requirements. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of explicit security headers like Content-Security-Policy and lack of published incident response or vulnerability disclosure policies represent areas for improvement. The site uses third-party scripts for cookie management, which should be regularly audited. Overall, the security practices are adequate for a regional utility provider but could be enhanced to meet higher standards and improve transparency.

Recommendations

  1. Implement and enforce security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to strengthen browser security.
  2. Publish a dedicated security policy and incident response contact information to improve transparency and readiness.
  3. Consider adding a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Regularly review and update third-party scripts and cookie management tools to mitigate potential vulnerabilities.
  5. Enhance SEO and accessibility features further to maintain competitive digital presence and compliance.

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, der Strom, Gas, Wasser, Wärme und Internetdienstleistungen für Nürtingen und die Region anbietet. Sie engagieren sich für Versorgungssicherheit und regionale Wirtschaftsförderung.
Key services
Electricity supply, Gas supply, Water supply, District heating, Highspeed Internet, E-mobility services, Swimming pools and sauna, Customer service portals
Content quality
good
Branding
consistent

Technology

Stack
PHP, JavaScript, jQuery UI, Video.js
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 with opt-in/out
  • No exposed sensitive data in HTML
  • Use of secure forms with required fields

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 regional energy and utility services.
  3. Comprehensive contact information and customer service details are provided.
  4. Cookie consent and privacy policy are implemented in compliance with GDPR.
  5. No explicit security policy or incident response information is published.
  6. No terms of service page detected.
  7. Use of Neos CMS and Flow PHP framework indicates modern CMS technology.
  8. Social media presence on Facebook and Instagram supports brand trust.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on the Neos CMS platform with the Flow PHP framework, indicating a modern and flexible content management system. JavaScript libraries such as jQuery UI and Video.js are used for interactive elements and media handling. The site is mobile-optimized with responsive design and accessibility features including skip links and ARIA labels. Performance is moderate with efficient use of CSS and JavaScript resources. The presence of structured data (JSON-LD) and Open Graph tags supports SEO and social media integration. Hosting details are not explicitly stated, but DNS points to regional name servers consistent with the business location. Overall, the technical infrastructure supports a professional and user-friendly website experience.
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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