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Security report for stiebel-eltron.fr

STIEBEL ELTRON GmbH & Co. KG · Energy · France

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

58/100

Risk levelMedium

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

STIEBEL ELTRON GmbH & Co. KG is a well-established German manufacturer specializing in innovative and eco-responsible heating, ventilation, and water heating solutions, with a strong presence in the French market. The company emphasizes renewable energy technologies, particularly heat pumps, and supports both professional installers and private customers through a comprehensive network and digital tools. The website reflects a mature business with a clear market position and a focus on quality and sustainability. Technically, the website employs modern JavaScript libraries and analytics tools, with a likely enterprise CMS backend. It is well-optimized for mobile and SEO, though some accessibility features could be enhanced. Security posture is solid with HTTPS and cookie consent mechanisms, though explicit security headers could be more visible. No vulnerabilities or exposed sensitive data were detected. The WHOIS data is unavailable, which slightly impacts trust but is not uncommon for European domains with privacy protections. The website includes comprehensive privacy, cookie, and compliance policies, indicating good GDPR adherence. Social media presence and professional contact information further support credibility. Overall, the site is professional, secure, and compliant, serving a large enterprise in the energy sector with a focus on renewable heating solutions.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 100 · Critical
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

7 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 Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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

    • 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

  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 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

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

Keep watching stiebel-eltron.fr

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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
90
Security headers
70
Email security
85
DNS health
70
Network security
20
GDPR outside view
10
Average
58

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

STIEBEL ELTRON operates in the energy sector, focusing on renewable heating and ventilation solutions. Their business model centers on manufacturing and distributing high-quality heat pumps and related products, supported by a network of certified installers (Conforthermiciens). The company targets both professionals and private customers, offering tools for project simulation and financial aid information. Their market position is strong in France, backed by decades of experience and German engineering reputation. The website content and structure indicate a mature digital presence with strategic emphasis on customer support, training, and compliance. Partnerships with installer networks and active social media engagement suggest a well-rounded ecosystem supporting growth and customer retention.

Security posture

The website demonstrates a good security maturity level with enforced HTTPS, cookie consent mechanisms, and anonymized analytics tracking. No critical vulnerabilities or exposed sensitive data were found in the HTML content. Security policies and incident response mechanisms are documented, though explicit security headers like X-Frame-Options and X-Content-Type-Options are not clearly visible and could be improved. The absence of WHOIS data limits domain trust assessment but does not indicate malicious intent. Overall, the site aligns well with GDPR requirements and industry best practices, supporting a secure user experience.

Recommendations

  1. Implement and verify explicit security headers such as X-Frame-Options and X-Content-Type-Options to enhance protection against clickjacking and MIME sniffing.
  2. Conduct regular audits of third-party JavaScript libraries and analytics tools to ensure no vulnerabilities or privacy issues arise.
  3. Enhance accessibility features to meet higher compliance standards and improve user experience for all visitors.
  4. Consider publishing a vulnerability disclosure policy or security.txt file to improve transparency and incident response readiness.
  5. Improve WHOIS transparency if possible to strengthen domain trustworthiness and reduce ambiguity for users and partners.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
STIEBEL ELTRON GmbH & Co. KG
Description
STIEBEL ELTRON est un fabricant Allemand en solutions de chauffage, ventilation et production d'eau chaude sanitaire aux énergies renouvelables. Entreprise familiale axée sur l'innovation depuis 1924, spécialisée dans les pompes à chaleur, chauffage électrique, ventilation et eau chaude sanitaire.
Key services
Manufacture of heat pumps, Heating solutions, Ventilation systems, Water heating systems, Professional support and training, Network of certified installers (Conforthermiciens)
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, RequireJS, Modernizr, Piwik PRO analytics, Swiper.js, Greensock TweenMax, Lodash
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 found in HTML
  • Use of analytics with anonymization options

Analytics and tracking

Services
Piwik PRO
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Piwik PRO
Marketing tools
Piwik PRO Tag Manager
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and content-rich
  2. Strong focus on renewable energy heating solutions
  3. Comprehensive navigation and multilingual support
  4. Good privacy and cookie compliance with consent mechanism
  5. No WHOIS data available, possibly due to privacy or registry restrictions
  6. No security blocking or WAF challenge detected
  7. Use of modern JavaScript libraries and analytics tools
Technical notes

Notes

The website uses a modern JavaScript tech stack including RequireJS for module loading, Modernizr for feature detection, Swiper.js for sliders, Greensock TweenMax for animations, and Lodash for utility functions. Analytics are handled via Piwik PRO with privacy-conscious configurations. The CMS appears to be an enterprise-grade system, likely Adobe Experience Manager, based on URL patterns and content structure. Performance is moderate with good mobile optimization and SEO metadata. Some technical debt may exist in accessibility and explicit security header implementation. The site is well-structured with clear navigation and multilingual support, indicating a mature digital infrastructure supporting business goals.
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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