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Security report for kuhlmann-leitungsbau.de

Kuhlmann Leitungsbau GmbH & Co. KG · Energy · Germany

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

Security score

56/100

Risk levelMedium

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

Kuhlmann Leitungsbau GmbH & Co. KG is a leading infrastructure construction company based in Germany, specializing in sustainable and efficient infrastructure projects including broadband expansion, district heating, geothermal energy, and pipeline construction. With over 650 experts across nine locations, the company serves a broad range of clients including municipalities and businesses, positioning itself as a pioneer in future-proof infrastructure solutions. The website reflects a mature digital presence with comprehensive service descriptions, multiple office locations, and active social media engagement. Technically, the site is built on WordPress with modern frameworks and plugins, optimized for SEO and mobile devices. Security posture is solid with HTTPS, cookie consent, and no visible vulnerabilities, though there is room for improvement in publishing explicit security policies and incident response contacts. Overall, the domain registration data aligns well with the business identity, supporting legitimacy and trustworthiness.

Scanned

This is an earlier scan of kuhlmann-leitungsbau.de. View the latest report

NIS2 and GDPR posture

GDPR outside view
43/ 100 · High
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 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';…

  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

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Keep watching kuhlmann-leitungsbau.de

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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
85
Security headers
30
Email security
85
DNS health
70
Network security
20
GDPR outside view
43
Average
56

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 within the energy and telecommunications sectors, offering a wide range of services from broadband and cable construction to innovative technologies like Agri-PV and horizontal drilling. It is part of the Seier Gruppe, which enhances its market position and resource base. The business model focuses on project-based infrastructure development and maintenance, targeting municipalities and commercial clients. Certifications and awards related to training and apprenticeship programs indicate a commitment to workforce development. The company maintains a strong partnership ecosystem and leverages digital channels for recruitment and corporate communication, signaling growth and strategic market engagement.

Security posture

The website demonstrates a good security baseline with HTTPS enforced and cookie consent mechanisms in place. However, no explicit security policy or vulnerability disclosure page is found, and no dedicated incident response contact emails are published. The use of Google Tag Manager and Cookiebot indicates awareness of privacy and tracking controls. Security headers are not explicitly detected, suggesting an area for enhancement. No vulnerabilities or exposed sensitive data were identified in the content. Overall, the security maturity is moderate to good but could benefit from formalized policies and improved transparency.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Implement and expose a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  3. Add explicit incident response contact channels such as security@ or abuse@ email addresses.
  4. Enhance HTTP security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  5. Regularly audit third-party scripts and plugins for vulnerabilities and update them promptly.

Contact details published on the site

Addresses
Legal name
Kuhlmann Leitungsbau GmbH & Co. KG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Kuhlmann Leitungsbau GmbH & Co. KG
Description
In einer Welt, die nachhaltige und effiziente Infrastrukturen zunehmend fordert, definiert Kuhlmann die Standards neu.
Key services
Breitbandausbau (Broadband expansion), Fernwärme (District heating), Geothermie (Geothermal energy), Hausanschluss (House connection), Horizontalbohrung (Horizontal drilling), Kabelbau (Cable construction), Kanalbau (Sewer construction), Agri-PV (Agricultural photovoltaic), Rohrleitungsbau (Pipeline construction), Telekommunikation (Telecommunication)
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress 6.8.2, Yoast SEO plugin v25.5, UIkit 4.5.23, Google Tag Manager, Cookiebot, Contact Form 7
Frameworks
UIkit
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data detected
  • Use of Google Tag Manager and Cookiebot for privacy and tracking control

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Cookiebot
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Strong presence of business information and contact details.
  3. Good use of structured data and SEO best practices.
  4. Multiple office locations with detailed contact info.
  5. Active social media presence linked.
  6. Cookie consent and privacy mechanisms implemented.
  7. No visible security policy or vulnerability disclosure pages.
  8. Use of modern web technologies and CMS.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on WordPress 6.8.2 using the Yootheme theme and UIkit framework, ensuring a modern and responsive design. SEO is enhanced via the Yoast SEO plugin, and structured data is implemented using JSON-LD for improved search engine understanding. Performance is moderate with optimized images and lazy loading techniques. The site includes Google Tag Manager and Cookiebot for analytics and privacy compliance. Accessibility features and mobile optimization are well addressed. No hosting provider details were explicitly found, but the domain uses multiple UI-DNS name servers indicating professional DNS management. Overall, the technical infrastructure supports a professional and scalable web presence.
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. 56/100Medium32 findingsView report
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