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Security report for waehler.de

Tief- und Rohrleitungsbau Wilhelm Wähler GmbH & Co. KG · Energy · Germany

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

Security score

54/100

Risk levelMedium

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

Tief- und Rohrleitungsbau Wilhelm Wähler GmbH & Co. KG is a well-established infrastructure and civil engineering company based in Germany, with a history dating back to 1919. It operates as a subsidiary of the Seier Gruppe and is recognized as a leading player in northern Germany's infrastructure construction sector. The company offers a broad range of services including district heating, pipeline construction, geotechnical engineering, and telecommunications infrastructure. The website reflects a professional and consistent brand image, emphasizing employee development and corporate values. Technically, the site is built on WordPress with modern frameworks like UIkit and integrates SEO and cookie consent tools, indicating a mature digital presence. Security posture is good with HTTPS and cookie consent implemented, though some security headers and policies could be improved. Overall, the site is trustworthy, well-structured, and compliant with GDPR requirements.

Scanned

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

Need hands-on remediation? Email guard@offseq.com

Keep watching waehler.de

This scan found 25 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.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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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
77
Security headers
30
Email security
85
DNS health
70
Network security
20
GDPR outside view
43
Average
54

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 holds a strong market position in the energy and transportation sectors, focusing on infrastructure projects in northern Germany. Its business model revolves around providing specialized construction and engineering services, supported by a large workforce and multiple certifications that enhance its credibility. The parent company relationship with Seier Gruppe provides additional stability and growth opportunities. The website targets professionals, clients, and potential employees, offering detailed service descriptions and career information. The presence of multiple social media channels and corporate content like podcasts and newsletters indicates active engagement with stakeholders. The company’s strategic focus on sustainability, innovation, and employee development positions it well for future growth.

Security posture

The website demonstrates a solid security foundation with HTTPS enforced and a cookie consent mechanism in place, supporting GDPR compliance. No critical vulnerabilities or exposed sensitive data were detected in the analysis. However, the absence of explicit security policies, incident response contacts, and security.txt files suggests room for improvement in transparency and preparedness. Security headers such as Content-Security-Policy and X-Frame-Options are not evident, which could enhance protection against common web attacks. Overall, the security posture is good for a corporate website but could be strengthened by adopting additional best practices and publishing clear security policies.

Recommendations

  1. Implement and publish a formal security policy and incident response contact information on the website.
  2. Add security headers like Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to improve protection.
  3. Create and host a security.txt file to facilitate vulnerability disclosure and improve transparency.
  4. Regularly audit third-party scripts and plugins to ensure no vulnerable libraries are in use.
  5. Enhance accessibility features to improve compliance and user experience for all visitors.

Contact details published on the site

Addresses
Legal name
Tief- und Rohrleitungsbau Wilhelm Wähler GmbH & Co. KG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tief- und Rohrleitungsbau Wilhelm Wähler GmbH & Co. KG
Description
Seit 1919 der Mensch im Mittelpunkt des Unternehmens - Wir sehen Innovationen als Bündnis mit der Zukunft. Bewirb dich jetzt!
Key services
Fernwärme, Berstlining, Hausanschluss, Konstruktiver Ingenieurbau, Horizontalbohrung, Kabelbau, Kanalbau, Microtunneling, Rohrleitungsbau, Saugbaggern
Content quality
good
Branding
consistent

Technology

Stack
WordPress, Yoast SEO plugin, UIkit, Google Tag Manager, Cookiebot
Frameworks
UIkit
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Cookiebot
Marketing tools
Cookiebot
Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed and well-structured
  2. Strong emphasis on company history and employee development
  3. Multiple certifications and awards displayed prominently
  4. Comprehensive service listing with detailed navigation
  5. Cookie consent and privacy policy implemented
  6. No visible security policy or incident response contact
  7. No suspicious or malicious content detected
  8. Social media presence across multiple platforms
  9. Use of modern web technologies and SEO best practices
Technical notes

Notes

The website is built on WordPress CMS with the Yoast SEO plugin, UIkit framework for UI components, and integrates Google Tag Manager and Cookiebot for analytics and consent management. The site uses responsive design techniques and modern image formats (WebP) for performance optimization. While the hosting provider is not explicitly identified, the domain uses multiple UI-DNS name servers indicating a stable DNS setup. Performance is moderate with good mobile optimization and SEO practices. The site could benefit from additional accessibility improvements and performance tuning to enhance 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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