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Security report for dn-wohnbau.de

DN Wohnbau GmbH · Real Estate · Germany

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

61/100

Risk levelMedium

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

DN Wohnbau GmbH is a well-established real estate developer based in Munich, Germany, specializing in the development and construction of multi-family residential buildings and housing complexes. Founded in 1994, the company emphasizes quality craftsmanship and sophisticated architectural design through a long-term partnership with a dedicated architecture firm. Their market position is that of a trusted regional developer with a portfolio of completed, ongoing, and planned projects, targeting property buyers and investors seeking premium residential properties in Munich and surrounding areas. Technically, the website is built on the Webflow platform, leveraging modern web technologies including Google Tag Manager, Microsoft Clarity, Facebook Pixel, and Brevo for marketing automation. The site is well-optimized for performance, mobile responsiveness, and accessibility, with a professional design and clear navigation structure. Cookie consent and privacy compliance mechanisms are implemented effectively. From a security perspective, the site enforces HTTPS and uses Cloudflare Turnstile captcha for form protection, but lacks explicit security headers and published security policies. No vulnerabilities or exposed sensitive data were detected. The WHOIS data is consistent with the business claims, showing no privacy protection or suspicious registration patterns. Overall, DN Wohnbau GmbH presents a credible and professional online presence with good security and privacy practices. Strategic improvements could include publishing formal security and incident response policies and enhancing security headers to further strengthen their security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

5 findings rated critical or high. Fix these first.

  1. 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 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

  3. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

  4. 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 dn-wohnbau.de

This scan found 28 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.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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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
62
Security headers
30
Email security
40
DNS health
65
Network security
100
GDPR outside view
68
Average
61

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

DN Wohnbau GmbH operates as a specialized real estate developer focusing on residential projects in Munich and nearby regions. Their competitive advantage lies in their long-standing collaboration with a partner architecture firm ensuring high-quality project execution and design. The business model centers on property development and sales, targeting middle to upper-class property buyers and investors. The company demonstrates growth through a portfolio of 29 realized projects and ongoing developments. Their partnership ecosystem includes regional construction and master craftsman companies. The website's testimonials and detailed project descriptions support their market credibility and customer trust.

Security posture

The website exhibits a mature security posture with mandatory HTTPS encryption and anti-spam measures via Cloudflare Turnstile captcha. Privacy compliance is well addressed through a comprehensive privacy policy and cookie consent banner. However, the absence of explicit security headers such as Content-Security-Policy and lack of published incident response or vulnerability disclosure policies represent gaps. No critical vulnerabilities or exposed sensitive information were found. The security score is good but could be improved by formalizing security policies and enhancing HTTP security headers.

Recommendations

  1. Implement and publish explicit HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Develop and publish a formal security policy and incident response contact information to improve transparency and readiness.
  3. Consider adding a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Regularly review and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance user trust by providing more detailed information about data retention policies and security certifications if applicable.

Contact details published on the site

Addresses
Legal name
DN Wohnbau GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
DN Wohnbau GmbH
Description
DN Wohnbau GmbH is a progressive real estate developer based in Munich and surrounding areas, specializing in the construction of multi-family houses and residential complexes with sophisticated architecture and high-quality equipment. The company has been active since 1994 and collaborates closely with a partner architecture firm to ensure high-quality craftsmanship and reliable project execution.
Key services
Development of multi-family houses, Construction of residential complexes, Project planning and execution, Personalized customer consultation and support
Content quality
good
Branding
consistent

Technology

Stack
Webflow CMS, Google Tag Manager, Google Analytics, Microsoft Clarity, Facebook Pixel, Brevo (Sendinblue) SDK, Splide.js slider, Cloudflare Turnstile captcha
Frameworks
Webflow
Platforms
Webflow Hosting
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Cloudflare Turnstile captcha for form spam protection
  • Cookie consent banner with opt-in/out
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Microsoft Clarity, Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Microsoft Clarity, Google Analytics (via GTM), Facebook Pixel
Marketing tools
Brevo (Sendinblue) for email marketing
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Clear business focus on real estate development in Munich area.
  3. Multiple customer testimonials enhance trust.
  4. Comprehensive cookie consent mechanism implemented.
  5. No explicit security or incident response policies published.
  6. Use of modern web technologies and analytics tools.
  7. Contact information is complete and clearly presented.
  8. No signs of malicious or suspicious content.
Technical notes

Notes

The website is built on the Webflow CMS platform, utilizing modern JavaScript libraries such as Splide.js for sliders and integrating multiple analytics and marketing tools including Google Tag Manager, Microsoft Clarity, Facebook Pixel, and Brevo (Sendinblue). Hosting is likely provided by Webflow with Cloudflare CDN and security services in front. The site demonstrates fast loading times, excellent mobile optimization, and good accessibility features. The use of Cloudflare Turnstile captcha enhances form security. Technical debt appears minimal, but the site could benefit from explicit security headers and formalized security documentation to reduce risk.
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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