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Security report for tc-rotblau.de

Tennisclub TC Rot-Blau Regensburg · Other · Germany

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

54/100

Risk levelMedium

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

Tennisclub TC Rot-Blau Regensburg is a well-established tennis club founded in 1925, serving as one of the largest and leading tennis clubs in Bavaria and Germany. The club offers a broad range of services including tennis training for all age groups, membership benefits, event hosting, and an online merchandise shop. The website reflects a family-oriented sports organization with a strong local presence and community engagement. Technically, the site is built on WordPress with modern plugins such as Yoast SEO and Complianz GDPR for compliance, hosted on Goneo servers. The site is mobile-optimized and provides a good user experience with clear navigation and professional design. Security posture is solid with HTTPS enforced and cookie consent mechanisms in place, although some security headers could be improved. Overall, the domain registration data aligns well with the business claims, indicating legitimacy and trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 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

6 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 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';…

  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. 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 tc-rotblau.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.

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
72
Security headers
15
Email security
70
DNS health
65
Network security
20
GDPR outside view
80
Average
54

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 tc-rotblau.de, from OffSeq Breach.

No leaked records found

Breach holds no records for tc-rotblau.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

The club operates primarily as a membership-based sports organization targeting families and tennis enthusiasts in the Bavaria region. Its market position is strong locally, supported by a century-long history and a broad service offering including training, events, and merchandise sales. The club maintains partnerships with local sponsors and uses third-party services for court booking and online sales. The business model relies on membership fees, training programs, event participation, and merchandise revenue. The website content and structure support community engagement and member services effectively.

Security posture

The website demonstrates a mature security posture with HTTPS enabled and GDPR-compliant cookie consent management. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of explicit security headers such as Content-Security-Policy and X-Frame-Options suggests room for improvement. There is no public incident response or vulnerability disclosure information, which could enhance trust. Overall, the site follows good security practices appropriate for its business type.

Recommendations

  1. Implement security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection.
  2. Publish a security policy or incident response contact to improve transparency and preparedness.
  3. Regularly audit and update WordPress core and plugins to mitigate vulnerabilities.
  4. Enhance accessibility features to improve usability for all users.
  5. Consider adding analytics with privacy-respecting configurations to better understand user engagement.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tennisclub TC Rot-Blau Regensburg
Description
Der Tennisclub für die gesamte Familie. Der TC Rot-Blau Regensburg wurde 1925 gegründet und ist einer der größten und führenden Tennisclubs in Bayern und Deutschland. Er bietet ein breit gefächertes Angebot für Freizeitspieler, Training für Kinder, Jugendliche und Erwachsene, sowie Mannschaften und Events.
Key services
Tennis training for all ages, Membership and club facilities, Online merchandise shop, Event hosting, Court booking
Content quality
good
Branding
consistent

Technology

Stack
WordPress 6.8.3, Yoast SEO plugin, jQuery 3.7.1, Font Awesome 4.7.0, Google Maps API, Complianz GDPR plugin, Newsletter plugin
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent management
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Marketing tools
Complianz GDPR Cookie Consent
Transparency
basic

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 targets local/regional tennis club members and enthusiasts.
  3. Strong compliance with GDPR and cookie consent regulations.
  4. Use of standard WordPress plugins and technologies.
  5. Clear contact information and social media presence.
  6. No signs of suspicious or malicious activity.
Technical notes

Notes

The website uses a standard WordPress CMS with popular plugins for SEO (Yoast), GDPR compliance (Complianz), and newsletter management. It leverages jQuery and Font Awesome for UI elements and Google Maps API for location display. Hosting is provided by Goneo, inferred from nameservers. Performance is moderate with good mobile optimization. The site uses canonical URLs and Open Graph metadata for SEO and social sharing. Some inline CSS and JavaScript are present, with deferred loading of emoji scripts. The technical stack is modern but could benefit from additional security hardening and performance optimizations.
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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