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Security report for gruenbeck.de

Grünbeck AG · Energy · Germany

Medium risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

73/100

Risk levelMedium

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

Grünbeck AG is a well-established German company specializing in water treatment solutions for over 75 years, serving both private households and industrial clients. The company holds a leading market position in the energy sector focused on water quality and hygiene. Their website reflects a mature digital presence with comprehensive product offerings, including water softening, filtration, disinfection, and related services. Technically, the site is built on TYPO3 CMS, uses modern JavaScript libraries, and integrates Google services for analytics and tag management with GDPR-compliant consent mechanisms. Security measures include HTTPS enforcement and Google reCaptcha for form protection. The domain registration data aligns well with the company's history and legitimacy, showing no suspicious patterns. Overall, Grünbeck demonstrates a strong security posture, good privacy compliance, and professional business credibility.

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

3 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 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 gruenbeck.de

This scan found 22 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
77
Security headers
70
Email security
55
DNS health
65
Network security
100
GDPR outside view
68
Average
73

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

Grünbeck AG operates in the water treatment industry with a diversified product portfolio targeting residential, commercial, and industrial customers. Their business model combines product sales with extensive service offerings, including maintenance and training. The company leverages partnerships and awards (e.g., PLUS X AWARD®) to enhance brand trust. Their multi-language website and social media presence indicate a broad geographic reach primarily focused on German-speaking countries and Europe. The company maintains a professional and consistent brand image, supported by structured data and detailed contact information, facilitating customer engagement and lead generation.

Security posture

The website employs HTTPS with strong SSL configuration and integrates Google reCaptcha to mitigate spam and bot attacks on contact forms. Cookie consent is managed with a granular opt-in mechanism, reflecting GDPR compliance. Google Tag Manager is configured with consent mode to respect user privacy choices. While explicit security headers like X-Frame-Options and Content-Security-Policy are not visibly confirmed in the HTML, the overall security posture is solid. No vulnerabilities or exposed sensitive data were detected. However, the absence of a public security policy or incident response page and lack of a security.txt file are areas for improvement.

Recommendations

  1. Publish a dedicated security policy and incident response information on the website to enhance transparency.
  2. Implement and explicitly confirm security headers such as X-Frame-Options and X-Content-Type-Options to strengthen protection against clickjacking and MIME sniffing.
  3. Add a security.txt file to facilitate responsible vulnerability disclosure and improve security communication.
  4. Regularly audit third-party scripts and libraries to ensure no vulnerabilities are introduced.
  5. Maintain and update cookie and privacy policies to reflect evolving regulations and best practices.

Contact details published on the site

Addresses
Legal name
Grünbeck AG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Grünbeck AG
Description
Die Grünbeck AG ist ein führendes Unternehmen im Bereich der Wasseraufbereitung mit Hauptsitz in Höchstädt an der Donau, Deutschland. Seit über 75 Jahren bietet Grünbeck innovative Lösungen für exzellente Wasserqualität sowohl für private Haushalte als auch für Gewerbe und Industrie.
Key services
Wasserenthärtungsanlagen, Wasserfilter, Pool- und Schwimmbadtechnik, Heizung und Energie, Sicherheitseinrichtungen, Dosiertechnik, Desinfektion, Hygienetechnik, Wasserspender sodajet, Service und Wartung
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, jQuery 3.6.0, Slick Carousel, Google reCaptcha, Google Tag Manager
Frameworks
TYPO3 CMS
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Google reCaptcha for contact forms
  • Cookie consent with granular options
  • Google Tag Manager consent mode implemented

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google AdSense, Google DoubleClick
Transparency
good

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 GDPR and cookie compliance with detailed consent management.
  3. Comprehensive corporate information with structured data for SEO and trust.
  4. Use of modern web technologies and frameworks.
  5. Presence of multiple social media and partner links indicating active engagement.
  6. No signs of suspicious or malicious content.
  7. Good security posture with HTTPS and reCaptcha integration.
Technical notes

Notes

The website is built on TYPO3 CMS, a robust and widely used content management system, ensuring scalability and maintainability. It uses modern JavaScript libraries like jQuery 3.6.0 and Slick Carousel for interactive UI components. Google services such as Tag Manager, Analytics, and reCaptcha are integrated with consent management, reflecting a mature approach to user privacy and data collection. The site is mobile-optimized with responsive design and good accessibility features. Hosting appears to be managed via Deutsche Telekom domains, suggesting reliable infrastructure. Performance is fast with lazy loading of images and scripts. Overall, the technical implementation supports a professional and user-friendly experience with room for minor security enhancements.
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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