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Security report for domainunion.de

Domain Union AG · Technology · Germany

High risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

48/100

Risk levelHigh

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

Domain Union AG operates as a small-sized domain registration and web hosting provider primarily serving German-speaking customers. The company offers affordable .de domain registrations with additional services such as email hosting, FTP access, and SSL certificates. Their market position is focused on cost-effective solutions with quick domain registration turnaround times, supported by customer testimonials emphasizing speed and service quality. Technically, the website is built on basic HTML and CSS without modern frameworks or CMS, showing moderate performance but lacking mobile optimization and accessibility features. Security posture is limited with no visible HTTPS enforcement or security headers, and privacy compliance is minimal despite the presence of a privacy policy page. Overall, the website is functional but could benefit from modernization and enhanced security practices.

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

7 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 domainunion.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

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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
85
Security headers
15
Email security
70
DNS health
70
Network security
20
GDPR outside view
28
Average
48

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

Domain Union AG targets individuals and small to medium businesses looking for economical domain and hosting services in Germany and neighboring countries. Their competitive advantage lies in low pricing, fast domain registration, and a straightforward service offering. The business model relies on recurring revenue from domain and webspace subscriptions. The company maintains partnerships with domain news and marketing platforms, enhancing its market presence. Growth indicators include longstanding operation claims and a portfolio of customer testimonials. However, the lack of visible contact details and modern digital marketing tools suggests room for improvement in customer engagement and brand visibility.

Security posture

The current security maturity level is low to moderate. The absence of HTTPS enforcement and security headers exposes the website to potential risks such as data interception and clickjacking. No incident response or security policy information is provided, limiting transparency and preparedness. GDPR compliance is partial, with a privacy policy present but no cookie consent mechanism. The lack of visible contact channels for security incidents further reduces readiness. While no critical vulnerabilities are evident from the HTML content, the security posture requires significant enhancement to meet modern standards and regulatory requirements.

Recommendations

  1. Implement HTTPS with valid SSL certificates and enforce secure connections site-wide.
  2. Add essential security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Introduce a cookie consent banner to comply with GDPR and enhance user privacy transparency.
  4. Publish a clear security policy and provide dedicated incident response contact information.
  5. Improve website mobile responsiveness and accessibility to enhance user experience and SEO.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Domain Union AG
Description
Domain Union AG offers domain registration, mail, and webspace hosting services primarily for .de domains at competitive prices with features like FTP, unlimited subdomains, and no setup fees.
Key services
Domain registration (.de, .at, .ch, .com, .net, .info, .biz, .org, .eu), Web hosting with FTP access, Email hosting with unlimited mail addresses, Subdomains, SSL certificates
Content quality
basic
Branding
moderate

Technology

Stack
HTML, CSS
Performance
moderate
Mobile
poor
Accessibility
poor
SEO
basic

Security

Observed score
30/100

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

Design
basic
User experience
basic
Content relevance
good
Navigation
basic
Professionalism
basic
Trustworthiness
moderate

Key observations

  1. Website is primarily in German targeting German-speaking customers.
  2. Offers low-cost domain registration and web hosting services.
  3. No visible contact emails or phone numbers explicitly labeled on the main page.
  4. No social media links detected.
  5. No forms detected in the provided HTML content.
  6. No Open Graph or JSON-LD structured data present.
  7. No cookie consent mechanism or banner found.
  8. Website uses legacy HTML charset ISO-8859-1 and older HTML styling.
  9. Customer testimonials are prominently displayed to build trust.
  10. No modern JavaScript frameworks or analytics scripts detected.
Technical notes

Notes

The website uses basic HTML and CSS without modern JavaScript frameworks or CMS platforms, indicating a legacy or minimalistic technical infrastructure. Performance is moderate but could be improved with modern optimization techniques. The lack of mobile optimization and accessibility features suggests technical debt and missed opportunities for broader audience reach. No analytics or tracking scripts were detected, which limits data-driven insights but also reduces privacy concerns. Hosting provider details are not explicitly available. Overall, the technical setup supports the business model but requires modernization to improve security, performance, and user experience.
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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