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Security report for dtb-tennis.de

Deutscher Tennis Bund · Other · Germany

Low risk. 2 critical or high findings in Security headers and SSL/TLS.

Security score

81/100

Risk levelLow

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

The Deutscher Tennis Bund (DTB) operates the official tennis federation website for Germany, providing comprehensive information on national teams, training programs, membership offers, and tennis events. The site targets tennis enthusiasts, players, coaches, and fans within Germany, positioning itself as the authoritative source for tennis-related content in the country. The business model is non-profit and focused on sports promotion and community engagement. Technically, the website leverages Adobe Experience Manager (AEM) as its CMS, hosted on Adobe's cloud infrastructure, and integrates modern technologies such as Cookiebot for consent management, Google Tag Manager for analytics, and Smart AdServer for advertising. The site demonstrates good mobile optimization, accessibility, and SEO practices, reflecting a mature digital infrastructure. From a security perspective, the site enforces HTTPS, uses secure cookies, and implements consent mechanisms aligned with GDPR. While explicit security headers are not fully visible in the HTML, the use of reputable third-party services and secure hosting suggests a strong security posture. No critical vulnerabilities or exposed sensitive data were detected. Overall, the website presents a low-risk profile with strong business credibility and compliance with privacy regulations. Strategic recommendations include enhancing visible security policies, publishing incident response contacts, and verifying security headers to further strengthen trust and security culture.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 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

2 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 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. 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 dtb-tennis.de

This scan found 17 issues across 5 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
80
Email security
70
DNS health
65
Network security
100
GDPR outside view
100
Average
81

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 dtb-tennis.de, from OffSeq Breach.

No leaked records found

Breach holds no records for dtb-tennis.de right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

DTB holds a strong market position as the official tennis federation in Germany, serving a medium-sized organization within the sports sector. Its competitive advantage lies in its authoritative status and comprehensive service offerings including training and membership management. Revenue streams likely include membership fees, sponsorships, and advertising. The target customer segments are tennis players, coaches, and fans in Germany. The partnership ecosystem includes related sports platforms such as mypadel.de and service subdomains under tennis.de. The organization demonstrates consistent branding and professional content delivery, supporting growth and engagement within the tennis community.

Security posture

The website exhibits a mature security posture with enforced HTTPS, secure session management, and GDPR-compliant consent mechanisms. The presence of CSRF tokens and secure cookies enhances protection against common web threats. However, explicit security policies and incident response contacts are not publicly visible, representing a compliance gap. No vulnerabilities or exposed sensitive data were found. The site uses reputable third-party services for analytics and advertising, managed under consent. Overall, the security culture appears strong but could benefit from increased transparency and documented policies.

Recommendations

  1. Publish a dedicated security policy page detailing security practices and controls.
  2. Add clear incident response contact information such as security@ or abuse@ email addresses.
  3. Verify and implement comprehensive HTTP security headers including X-Frame-Options and X-Content-Type-Options.
  4. Regularly audit and update third-party libraries and scripts to mitigate vulnerabilities.
  5. Enhance transparency on data protection officer contact details and GDPR compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Deutscher Tennis Bund
Description
Die offizielle Website des Deutschen Tennis Bundes. Hier gibt es aktuelle Informationen zu Nationalteams, Trainings, Mitgliederangeboten und mehr.
Key services
National teams information, Training programs, Membership offers, Event information
Content quality
good
Branding
consistent

Technology

Stack
Adobe Helix, Cookiebot, Google Tag Manager, Smart AdServer, Litepicker, ZK Framework (ZKau), Cloudflare (implied by cookies and scripts), JavaScript, HTML5, CSS3
Frameworks
Adobe Helix, ZK Framework
Platforms
Adobe Experience Manager (AEM)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Cookie Consent Management (Cookiebot)
  • CSRF token cookie present
  • Secure cookies for session management

Analytics and tracking

Services
Google Tag Manager, Adobe Analytics (implied by Adobe cookies)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Smart AdServer
Tracking pixels
Cookiebot, ID5
Marketing tools
Cookiebot, ID5
Transparency
good

Site quality

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

Key observations

  1. Website uses modern consent management with Cookiebot
  2. Multiple reputable third-party integrations for analytics and advertising
  3. No visible security or privacy policy pages beyond privacy and cookie policies
  4. No explicit contact emails or phone numbers found in the provided HTML snippet
  5. No terms of service page detected
  6. Website content is in German and targeted at German tennis community
  7. No signs of adult or questionable content
  8. Good technical implementation with Adobe AEM CMS and cloud hosting
  9. Advertising and tracking practices are transparent and consent-based
Technical notes

Notes

The website is built on Adobe Experience Manager, leveraging Adobe Helix and ZK Framework for UI components. It uses modern JavaScript libraries and integrates Cookiebot for consent management, Google Tag Manager for analytics, and Smart AdServer for advertising. Hosting is on Adobe's cloud platform, ensuring scalability and reliability. Performance is moderate with good mobile responsiveness and accessibility features. The site uses local storage and cookies for session and consent management. Technical risks are minimal but include the need for explicit security header verification and continuous monitoring of third-party dependencies.
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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