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Security report for gentner.de

Alfons W. Gentner Verlag GmbH & Co. KG · Media · Germany

Medium risk. 4 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

Alfons W. Gentner Verlag GmbH & Co. KG operates a specialized media publishing house focused on the building technology trade, serving professionals such as architects and technical planners. The company maintains a professional web presence with a clear focus on media services, events, and advertising within the energy and building sectors. Their market position is that of an established niche media provider with partnerships supporting the energy transition. Technically, the website is built on Drupal CMS, leveraging modern JavaScript libraries and Google Tag Manager for analytics and marketing. The site is mobile-optimized and accessible with good SEO practices. Security posture is solid with HTTPS enforced and cookie consent mechanisms in place, although some security headers and explicit security policies are absent. Overall, the website is professional, trustworthy, and compliant with GDPR requirements.

Scanned

NIS2 and GDPR posture

GDPR outside view
43/ 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

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.

    • 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 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';…
  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 gentner.de

This scan found 25 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
72
Security headers
50
Email security
75
DNS health
65
Network security
40
GDPR outside view
43
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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention gentner.de, from OffSeq Breach.

Total records
165
Employees
0
Customers
165
Third parties
0
Weak passwords
17%

4 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for gentner.de.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The company targets a specialized audience in the building technology and energy sectors, offering publishing, media data, showroom services, and event hosting. Their business model revolves around providing high-value content and advertising opportunities to industry professionals. The presence of partner logos and event platforms indicates a collaborative ecosystem. The company appears medium-sized with consistent branding and a strong digital footprint in German-speaking markets. Growth indicators include active news updates and apprenticeship offerings. The company leverages social media channels to extend reach and engagement.

Security posture

The website demonstrates a mature security posture with HTTPS and cookie consent compliance. However, it lacks published security policies, incident response contacts, and vulnerability disclosure mechanisms. No security.txt file was found. The absence of security headers such as CSP or HSTS suggests room for improvement. No vulnerabilities or exposed sensitive data were detected in the HTML content. The site uses third-party analytics and marketing tools responsibly with user consent. Overall, the security posture is good but could be enhanced with formal policies and technical headers.

Recommendations

  1. Implement and publish a formal security policy and incident response page to improve transparency.
  2. Add security headers including Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, and X-XSS-Protection.
  3. Create and host a security.txt file to facilitate vulnerability disclosures.
  4. Include contact information for a Data Protection Officer or security contact to enhance compliance.
  5. Regularly audit third-party scripts and libraries to ensure no vulnerabilities are introduced.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Alfons W. Gentner Verlag GmbH & Co. KG
Description
Alfons W. Gentner Verlag Medienhaus für das gesamte Gebäudetechnik Handwerk - Fachplaner - Architekten
Key services
Publishing Fachmedien, Media data services, Showroom, Event and webinar hosting, Advertising services
Content quality
good
Branding
consistent

Technology

Stack
Drupal CMS, jQuery, Google Tag Manager, Marfeel SDK
Frameworks
Drupal
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out for marketing cookies
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Marfeel Solutions
Marketing tools
Marfeel SDK
Transparency
good

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 in German and targeted at professionals in building technology and energy sectors.
  3. Cookie consent is implemented with clear categories and opt-in for marketing cookies.
  4. No direct email or phone contact found in HTML; contact likely via contact form.
  5. Social media presence on Facebook, YouTube, and Xing.
  6. No explicit security policy or incident response information published.
  7. No security.txt or vulnerability disclosure found.
  8. Website uses Drupal CMS with modern JavaScript libraries and Google Tag Manager.
  9. SSL is enabled and enforced.
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on Drupal CMS with jQuery and Google Tag Manager integration, indicating a modern and maintainable tech stack. Performance is moderate with responsive design and accessibility features implemented. The site uses domaincontrol.com DNS servers, typical for commercial domains. The presence of Marfeel SDK suggests mobile optimization efforts. No critical technical debt or deprecated technologies were detected. Opportunities exist to improve security headers and optimize performance further.
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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