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Security report for netzhalle.de

NETZ HALLE GmbH · Energy · Germany

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

Security score

66/100

Risk levelMedium

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

NETZ HALLE GmbH operates as a regional energy network operator in Halle (Saale), Germany, providing essential services such as electricity, gas, and heat network connections, metering, and customer support. The company is part of the larger Stadtwerke Halle group, which includes various utility and service subsidiaries. The website reflects a professional and regionally focused utility provider with clear service offerings and customer engagement channels. Technically, the website employs a legacy CMS (SixCMS) with common JavaScript libraries like jQuery and Modernizr, enhanced by user consent management via Usercentrics and analytics through Matomo. The site is mobile-optimized and provides a good user experience with clear navigation and relevant content. Hosting appears to be managed by EVH, consistent with the regional focus. From a security perspective, the site uses HTTPS and implements cookie consent mechanisms, but lacks visible advanced security headers and a public security policy or vulnerability disclosure. No critical vulnerabilities or suspicious content were detected. Privacy compliance is well addressed with a comprehensive privacy policy and cookie consent. Overall, the website is trustworthy, professionally maintained, and suitable for its target audience. Recommendations include enhancing security headers, publishing a security policy, and improving accessibility features to further strengthen compliance and security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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. 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. 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 netzhalle.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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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
20
Email security
70
DNS health
70
Network security
100
GDPR outside view
68
Average
66

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

NETZ HALLE GmbH holds a solid position as a regional energy network operator within the German utility sector, specifically serving Halle (Saale). Its business model revolves around infrastructure management and customer service for energy distribution. The company benefits from its affiliation with Stadtwerke Halle, leveraging a network of related subsidiaries and partners across utilities, transport, and IT services. Revenue streams likely derive from network usage fees, metering services, and connection charges. The target customers include residential, commercial, and industrial energy consumers, as well as installers and energy producers registering photovoltaic systems. The company demonstrates stable growth indicators through digital service offerings and integration with the parent group ecosystem. Strategic partnerships with local service providers enhance its market reach and operational capabilities.

Security posture

The website exhibits a moderate security maturity level with HTTPS enforced and cookie consent implemented, reflecting awareness of privacy and security requirements. However, the absence of explicit security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options reduces the defense-in-depth posture. No public security policy or vulnerability disclosure mechanism is present, limiting transparency and incident response readiness. The use of third-party scripts like Matomo and Usercentrics is managed asynchronously, reducing performance impact but requiring regular audits for vulnerabilities. No exposed sensitive data or obvious vulnerabilities were found in the HTML content. Overall, the security posture is adequate for a regional utility website but could be improved by adopting best practices in HTTP security headers and publishing incident response contacts.

Recommendations

  1. Implement comprehensive HTTP security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Publish a clear security policy and vulnerability disclosure guidelines to improve transparency and encourage responsible reporting.
  3. Add explicit contact information for a Data Protection Officer or security contact to support GDPR and incident response requirements.
  4. Enhance website accessibility features to meet recognized standards and improve user inclusivity.
  5. Regularly review and update third-party scripts and dependencies to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
NETZ HALLE GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
NETZ HALLE GmbH
Description
NETZ HALLE GmbH is an energy network operator providing electricity, gas, and heat network services primarily in Halle (Saale), Germany. It offers services including connection, metering, network usage, and customer service for energy consumers and producers.
Key services
Electricity network connection and usage, Gas network connection and usage, Heat network connection, Metering services, Customer service and support, Photovoltaic system registration and feed-in, Online services for installers and customers
Content quality
good
Branding
consistent

Technology

Stack
jQuery, jQuery UI, Modernizr, Slick Carousel, FontAwesome 5.15.4, Usercentrics Consent Management, Matomo Analytics
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced (base href uses https)
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of async and defer for scripts

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo
Marketing tools
Usercentrics 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 primarily in German and targeted at regional customers and installers.
  3. Strong affiliation with Stadtwerke Halle group and related subsidiaries.
  4. Good implementation of cookie consent and privacy policy.
  5. No visible terms of service or explicit security policy pages.
  6. Use of Matomo analytics and Usercentrics for privacy compliance.
  7. No suspicious or malicious external links detected.
  8. No adult or questionable content present.
  9. Moderate technical sophistication with legacy jQuery and custom CMS.
  10. Security headers not explicitly visible in HTML content; recommend server-side verification.
Technical notes

Notes

The website is built on a legacy CMS platform (SixCMS) with a technology stack including jQuery, jQuery UI, Modernizr, and Slick Carousel for UI components. FontAwesome is used for iconography. Usercentrics manages cookie consent, and Matomo provides analytics tracking. The site is hosted on EVH infrastructure, consistent with the regional focus. Performance is moderate with asynchronous script loading and responsive design for mobile devices. SEO is supported by proper meta tags and structured navigation. However, the technology stack includes older libraries which may pose maintenance and security challenges. Opportunities exist to modernize the stack, improve accessibility, and implement advanced security headers to reduce technical debt and enhance resilience.
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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