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Security report for merten.de

Merten · Energy · Germany

Partial score · DNS & email only

75/100

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

Merten is a specialist brand focused on smart home and building system technology, offering solutions that optimize energy consumption, enhance security, and improve comfort for both residential and commercial customers. The website is professionally designed and well-structured, reflecting its position as part of the Schneider Electric group, a global leader in energy management. The technical infrastructure is modern, leveraging TYPO3 CMS and popular JavaScript libraries, with integrations for marketing and analytics tools such as Marketo and Facebook Pixel. Security posture is solid with HTTPS and asynchronous script loading, but lacks explicit privacy and cookie policies, which are critical for GDPR compliance. Overall, the site is trustworthy and targets professionals and private users interested in intelligent building solutions.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
Checks completed
6of 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

1 finding rated critical or high. Fix these first.

  1. 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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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Keep watching merten.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
70
Email security
70
DNS health
70
Network security
100
GDPR outside view
88
Average
80
After the cap
75

Not counted

  • Security headers: did not complete in this scan.
  • 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

Merten operates in the energy sector, providing smart home and building automation products and services. Its market position is strengthened by its affiliation with Schneider Electric and related brands like Ritto, ABN, and APC. The business model centers on product sales and integrated solutions for energy efficiency, security, and comfort. The website targets both professional installers and private consumers, indicating a dual-segment approach. The presence of multiple brand logos and detailed product navigation suggests a mature ecosystem with a broad product portfolio. However, the absence of explicit contact details and compliance documentation may limit user trust and regulatory adherence.

Security posture

The website demonstrates a good security baseline with HTTPS enforced and use of security-conscious script loading practices. However, it lacks visible security headers such as Content-Security-Policy and does not provide explicit security or incident response policies. No vulnerabilities or exposed sensitive data were detected in the HTML content. The use of third-party marketing and analytics tools introduces moderate tracking, but no consent mechanism was found, which is a compliance gap. Overall, the security posture is adequate but could be improved by adding formal policies, security headers, and transparent data protection measures.

Recommendations

  1. Publish and prominently link a comprehensive privacy policy and cookie policy to enhance GDPR compliance.
  2. Implement a cookie consent mechanism to obtain user consent for tracking and marketing scripts.
  3. Add security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to strengthen security.
  4. Provide clear contact information including emails and phone numbers for customer support and data protection officer.
  5. Establish and disclose an incident response and vulnerability disclosure process to improve trust and security readiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Merten
Description
Spezialist für Smart Home & Gebäudesystemtechnik. Merten optimiert den Verbrauch, erhöht die Sicherheit und bietet maximalen Komfort – im Betrieb & zuhause.
Key services
Smart Home solutions, Building system technology, Energy optimization, Security enhancement, Comfort solutions
Content quality
good
Branding
consistent

Technology

Stack
TYPO3 CMS, jQuery 3.7.1, Slick Carousel, Footable, FontAwesome, Google Tag Manager, Facebook Pixel, Marketo Munchkin
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Google Tag Manager and Facebook Pixel with async loading
  • No exposed sensitive data in HTML
  • Use of nonce attributes in scripts

Analytics and tracking

Services
Marketo Munchkin, Google Tag Manager, Facebook Pixel
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Marketo Munchkin
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professional and focused on smart home and building system technology.
  3. No explicit privacy, cookie, or terms of service policies found in the provided HTML.
  4. Multiple tracking and marketing scripts are used, but no explicit consent mechanism detected.
  5. Strong branding association with Schneider Electric and related brands.
  6. No contact emails or phone numbers explicitly found in the provided content.
  7. Good technical implementation with modern CMS and libraries.
  8. Security posture is good but could be improved with explicit policies and headers.
Technical notes

Notes

The website is built on TYPO3 CMS, a robust and scalable content management system, using modern JavaScript libraries like jQuery, Slick Carousel, and Footable for UI enhancements. It integrates marketing and analytics tools such as Marketo Munchkin, Google Tag Manager, and Facebook Pixel, indicating a mature digital marketing strategy. The site is mobile-optimized with responsive design and preloaded fonts for performance. However, the performance is moderate, possibly due to multiple external scripts. Accessibility is basic, with room for improvement in ARIA roles and semantic HTML. SEO is supported by proper meta tags and Open Graph data. Hosting details are not explicit, but the domain uses standard name servers. Overall, the technical infrastructure is solid but could benefit from performance tuning and enhanced accessibility.
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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