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Security report for dehn.fr

DEHN FRANCE S.A.R.L · Energy · France

Medium risk. 6 critical or high findings in GDPR outside view and Security headers.

Security score

66/100

Risk levelMedium

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

DEHN FRANCE S.A.R.L is a well-established family-owned international company specializing in electrical protection solutions including lightning protection, surge protection, and workplace safety. With over 100 years of expertise, the company serves a broad range of sectors such as energy and transportation, providing both products and engineering services. The website reflects a mature digital presence with comprehensive product information and international reach. Technically, the site is built on Drupal 10, optimized for mobile, and uses modern web technologies with good performance and accessibility standards. Security posture is solid with HTTPS and deferred script loading, though explicit security policies and incident response information are not publicly detailed. Privacy compliance is strong with clear privacy and cookie policies, reflecting GDPR adherence. The absence of WHOIS data is a notable gap that slightly reduces trustworthiness but does not overshadow the professional presentation and business credibility. Overall, the site is professional, trustworthy, and well-positioned in its market niche.

Scanned

NIS2 and GDPR posture

GDPR outside view
28/ 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

6 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 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
    • 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';…

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

Keep watching dehn.fr

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
90
Security headers
25
Email security
85
DNS health
70
Network security
100
GDPR outside view
28
Average
66

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

DEHN FRANCE operates as a subsidiary of the DEHN group, targeting B2B customers in electrical infrastructure protection. Its competitive advantage lies in its century-long expertise, international footprint, and comprehensive product and service offerings. Revenue streams likely include product sales, engineering services, and software solutions. The company targets electrical engineers, infrastructure operators, and industrial clients, emphasizing compliance with standards and safety. The partnership ecosystem includes multiple European subsidiaries and international partners, enhancing market reach. Strategic observations highlight a focus on innovation, customer education (ebooks, training), and digital engagement through a modern website and social media channels.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, use of security best practices such as deferred JavaScript loading, and no visible exposure of sensitive data. However, the lack of explicit security policies, incident response contacts, and vulnerability disclosure mechanisms indicates room for improvement in transparency and readiness. Compliance with GDPR is evident through privacy and cookie policies. No critical vulnerabilities or malware indicators were found. The security score is good but could be enhanced by publishing formal security and incident response documentation and implementing additional HTTP security headers.

Recommendations

  1. Publish a dedicated security policy and incident response page with clear contact channels.
  2. Implement and verify HTTP security headers such as X-Frame-Options and X-Content-Type-Options.
  3. Investigate and resolve the missing WHOIS data to improve domain trustworthiness.
  4. Enhance transparency by adding a vulnerability disclosure policy or security.txt file.
  5. Continue regular audits of third-party scripts and tracking tools to maintain security and privacy compliance.

Contact details published on the site

Addresses
Legal name
DEHN FRANCE S.A.R.L
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
DEHN FRANCE S.A.R.L
Description
DEHN provides reliable protection for buildings, electrical and electronic installations, and people, specializing in lightning protection, surge protection, and workplace safety since 1910.
Key services
Lightning protection, Surge protection devices, Workplace safety equipment, Engineering services, Software for protection planning
Content quality
excellent
Branding
consistent

Technology

Stack
Drupal 10, Google Tag Manager, SVG icons, Responsive CSS, JavaScript deferred loading
Frameworks
Drupal
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Deferred script loading
  • No visible sensitive data exposure
  • No vulnerable libraries detected

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
basic

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 and professional design
  2. No WAF or security blocking detected
  3. WHOIS data unavailable, which is unusual for a commercial domain
  4. Strong branding and international presence
  5. Comprehensive privacy and cookie policies present
  6. Contact information is clear and includes phone and physical address
  7. No explicit security policy or incident response info found
  8. Use of modern CMS (Drupal 10) and good technical practices
  9. Google Tag Manager used for analytics and tracking
  10. No suspicious or malicious content detected
Technical notes

Notes

The website is built on Drupal 10, leveraging modern CSS and JavaScript techniques including deferred script loading and SVG icons for performance and scalability. The site is mobile-optimized with responsive design and accessibility features such as skip links and semantic HTML. SEO is supported by proper meta tags and Open Graph data. Performance is moderate, with room for optimization in image delivery and script management. Hosting provider details are not explicit. The technical stack is modern and well-maintained, supporting a professional user experience and robust content management.
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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