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Security report for dt-immobilien.de

D & T Immobilien GmbH & Co. KG · Real Estate · Germany

Medium risk. 5 critical or high findings in Email security, Security headers and 2 other checks.

Security score

52/100

Risk levelMedium

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

D & T Immobilien GmbH & Co. KG is a small, established real estate company based in Göttingen, Germany, with over 25 years of experience in property sales, rental, and management. The company targets property owners and prospective buyers and renters in the Göttingen region, offering comprehensive real estate services including valuation, marketing, contract preparation, and property management. The website reflects a professional and trustworthy business with clear contact channels and customer testimonials enhancing credibility. Technically, the site is built on WordPress using modern plugins such as Yoast SEO and Borlabs Cookie for privacy compliance, with good mobile optimization and moderate performance. Security posture is solid with HTTPS enforced and cookie consent mechanisms in place, though some security headers could be improved. No critical vulnerabilities or blocking mechanisms were detected, and the domain WHOIS data aligns well with the business claims, indicating legitimacy. Overall, the website presents a secure, compliant, and professional digital presence suitable for its business sector.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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. 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.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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 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';…

  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

  4. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • High

      High-Risk Service Exposed: FTP

      Port 21 (FTP) is publicly accessible - FTP - Often unencrypted file transfer

      What to do: Consider restricting access to FTP or implementing strong authentication

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

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

Keep watching dt-immobilien.de

This scan found 27 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
25
Email security
60
DNS health
60
Network security
20
GDPR outside view
83
Average
52

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

The company holds a strong local market position in Göttingen's real estate sector, leveraging over two decades of experience. Its business model focuses on direct real estate services including sales, rentals, and property management, targeting local property owners and tenants. The presence of memberships in industry organizations like IVD and Creditreform suggests professional networking and creditworthiness. The website's content and structure support lead generation and customer engagement through contact forms and client testimonials. The company does not appear to have subsidiaries or parent companies, indicating an independent operation. Marketing tools are basic but effective, focusing on compliance and user trust. Growth potential lies in expanding digital marketing and enhancing security transparency.

Security posture

The website demonstrates a good security posture with HTTPS enforced and a cookie consent mechanism compliant with GDPR. The use of CAPTCHA on contact forms helps mitigate spam and automated abuse. However, the absence of explicit security headers such as Content-Security-Policy and X-Frame-Options is a minor gap. No exposed sensitive data or vulnerable libraries were detected in the provided content. Incident response and security policy information are not publicly available, which could be improved to enhance transparency and preparedness. Overall, the site is secure for typical business operations but could benefit from additional security hardening and disclosure of security practices.

Recommendations

  1. Implement security headers like Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Publish a security policy and incident response contact information to improve transparency and readiness.
  3. Regularly update WordPress core, themes, and plugins to mitigate vulnerabilities.
  4. Consider adding a security.txt file to facilitate responsible vulnerability disclosure.
  5. Enhance accessibility features to improve compliance and user experience for all visitors.

Contact details published on the site

Addresses
Legal name
D & T Immobilien GmbH & Co. KG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
D & T Immobilien GmbH & Co. KG
Description
Verkauf, Vermietung und Verwaltung von Immobilien im Raum Göttingen mit über 25 Jahren Erfahrung als Hausverwalter und Immobilien-Makler.
Key services
Immobilienverkauf, Vermietung, Hausverwaltung
Content quality
good
Branding
consistent

Technology

Stack
WordPress, PHP, jQuery, Yoast SEO, WPBakery Page Builder, Borlabs Cookie, Jupiter Theme
Frameworks
WordPress
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with Borlabs Cookie plugin
  • Contact form with CAPTCHA validation

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Marketing tools
Borlabs Cookie
Transparency
basic

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 contact information and multiple communication channels.
  3. Cookie consent and privacy policy are implemented in compliance with GDPR.
  4. No signs of security blocking or WAF interference.
  5. Use of modern WordPress plugins and SEO tools.
  6. No visible security vulnerabilities or exposed sensitive data.
  7. Business is focused on real estate services in Göttingen, Germany.
Technical notes

Notes

The website is built on a WordPress CMS platform using the Jupiter theme and child theme, with plugins including Yoast SEO for search engine optimization, WPBakery Page Builder for content layout, and Borlabs Cookie for GDPR-compliant cookie management. JavaScript libraries such as jQuery are used for interactivity. The site loads resources from its own domain and trusted external domains like Facebook and Instagram for social media integration. Performance is moderate with lazy loading of images and responsive design for mobile devices. Accessibility is basic but could be improved. No hosting provider details were identified from the content. Overall, the technical infrastructure is modern and suitable for a small real estate business website.
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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