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Security report for viessmann-climatesolutions.com

Viessmann Climate Solutions · Energy · Germany

Medium risk. 4 critical or high findings in GDPR outside view and DNS health.

Security score

75/100

Risk levelMedium

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

Viessmann Climate Solutions is a globally recognized leader in energy and climate technology solutions, specializing in heating, cooling, ventilation, and renewable energy systems. The company, founded in 1917 and part of Carrier Global Corporation, offers a comprehensive portfolio of products and digital services aimed at sustainable and efficient climate control. Their website reflects a mature digital presence with professional design, clear navigation, and multilingual support, targeting both B2C and B2B audiences. Technically, the site leverages modern web technologies including Adobe Experience Manager CMS, Google Tag Manager, and Usercentrics for consent management, ensuring compliance with privacy regulations. Security posture is solid with HTTPS and consent mechanisms, though the absence of explicit security policies and incident response information suggests room for improvement. The missing WHOIS data for the domain is a notable concern, potentially indicating privacy protection or registration issues, but the strong corporate branding and parent company association mitigate trust concerns. Overall, the site is professional, secure, and compliant, supporting Viessmann's market position as a leading energy solutions provider.

Scanned

This is an earlier scan of viessmann-climatesolutions.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
53/ 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

4 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.

    • 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. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Unregistered MX Record

      MX record points to unregistered domain: goidmmorclulydvjmv54b4fljstiuvtp4rpjvbmjhdxifknjm2sq.mx-verification.google.com

      What to do: Remove or fix MX record pointing to unregistered domain

      • RFC 5321 §5.1
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory
    • High

      Domain Expires Soon

      Domain expires in 10 days

      What to do: Renew domain registration before expiration

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

Keep watching viessmann-climatesolutions.com

This scan found 20 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
95
Security headers
80
Email security
75
DNS health
45
Network security
100
GDPR outside view
53
Average
75

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

Viessmann Climate Solutions operates in the energy sector with a focus on climate and renewable energy technologies. Their business model integrates manufacturing, system solutions, and digital services, targeting residential, commercial, and industrial customers globally. The company benefits from a century-long heritage and the backing of Carrier Global Corporation, enhancing its competitive advantage. Their product portfolio includes heating and power generation, air conditioning, ventilation, district heating, and digital energy management services. The website's content and structure indicate a strong emphasis on sustainability, innovation, and customer engagement. Social media integration and comprehensive career pages suggest active talent acquisition and brand building. The lack of visible direct contact details on the homepage may indicate a preference for controlled communication channels. The missing WHOIS data warrants verification but does not currently undermine the company's established market presence.

Security posture

The website demonstrates a good security posture with enforced HTTPS, use of consent management tools (Usercentrics), and no visible exposure of sensitive data or vulnerable libraries. However, the absence of security headers such as Content-Security-Policy and lack of publicly available security policies or incident response contacts represent gaps in transparency and preparedness. No vulnerability disclosures or security.txt files were found, limiting external reporting options. The site does not expose forms with sensitive input fields on the homepage, reducing immediate risk. Overall, the security maturity is moderate to good but could be enhanced by publishing explicit security policies, incident response procedures, and implementing additional HTTP security headers.

Recommendations

  1. Publish a dedicated security policy and incident response page with clear contact information.
  2. Implement and verify HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Verify and update WHOIS domain registration information to ensure transparency and trust.
  4. Enhance contact information visibility for customer and security incident reporting.
  5. Regularly audit third-party scripts and consent mechanisms to maintain compliance and security.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Viessmann Climate Solutions
Description
Viessmann Climate Solutions is a global leader in efficient and systemic climate and renewable energy solutions, focusing on heating, cooling, ventilation, and power generation for residential and industrial applications. The company emphasizes innovation, quality, and sustainability with over 100 years of expertise.
Key services
Energy and heating solutions, Air conditioning, Ventilation systems, District heating for commercial and industrial sectors, Digital services
Content quality
excellent
Branding
consistent

Technology

Stack
Google Tag Manager, Usercentrics Consent Management, Adobe Helix RUM, JavaScript ES Modules, Lazy loading images
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management for cookies and tracking
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected in scripts

Analytics and tracking

Services
Google Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Usercentrics
Marketing tools
Usercentrics Consent Management
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 rich content in German and English
  2. Strong branding and professional design consistent with a large enterprise
  3. Comprehensive legal and privacy documentation present
  4. No direct contact emails or phone numbers found on homepage; contact likely via dedicated pages
  5. Use of modern web technologies and consent management tools
  6. No security policy or incident response information publicly available
  7. WHOIS data missing, which is unusual for a corporate domain
Technical notes

Notes

The website is built on Adobe Experience Manager CMS, leveraging modern JavaScript modules and lazy loading for images to optimize performance. Integration with Google Tag Manager and Usercentrics indicates a mature approach to analytics and privacy compliance. The site is mobile-optimized with responsive design and accessibility features. Performance is moderate, with potential improvements in loading speed and caching strategies. No hosting provider details were identified. The technical stack supports a professional and scalable digital presence suitable for a large enterprise. Opportunities exist to enhance security headers and streamline analytics data retention policies.
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. 76/100Low28 findingsView report
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