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Security report for asv-koeln.de

ASV Köln e.V. · Other · Germany

Medium risk. 5 critical or high findings in Security headers, SSL/TLS and 1 other check.

Security score

55/100

Risk levelMedium

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

ASV Köln e.V. is a well-established sports club based in Cologne, Germany, with a history spanning over 90 years. The organization offers a broad range of sports and fitness activities, including fitness courses, children's sports, various sports disciplines, and community events. The club targets a diverse audience including families, seniors, and sports enthusiasts, positioning itself as a central hub for active living in the Cologne region. The business model is primarily membership-based, supported by partnerships and sponsorships from local companies. The website reflects a professional and community-focused brand with strong trust indicators such as testimonials and partner logos. Technically, the website employs modern web technologies including HTML5, CSS3, JavaScript, and SVG graphics, with AJAX-enabled forms and a responsive design optimized for mobile devices. Hosting appears to be managed via your-server.de, and the site uses HTTPS with a valid SSL configuration. While no explicit CMS or major frameworks are detected, the site demonstrates good SEO and accessibility practices, though some improvements in security headers could be made. From a security perspective, the site enforces HTTPS, uses CSRF tokens in forms, and provides a cookie consent mechanism compliant with GDPR. However, no dedicated security policy or incident response contact information is found, and security headers are not evident in the provided data. There are no visible vulnerabilities or exposed sensitive data. Privacy compliance is strong with clear privacy and cookie policies, and user data collection is limited to necessary contact and newsletter forms. Overall, ASV Köln's website is a secure, professional, and user-friendly platform that effectively supports its community sports mission. Strategic improvements in security headers and incident response transparency would further enhance its security posture and trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 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. 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. 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

  3. 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 asv-koeln.de

This scan found 26 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.

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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
20
Email security
55
DNS health
65
Network security
20
GDPR outside view
95
Average
55

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 asv-koeln.de, from OffSeq Breach.

No leaked records found

Breach holds no records for asv-koeln.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

ASV Köln operates as a non-profit sports club with a strong local presence in Cologne. Its competitive advantage lies in its long-standing history, diverse sports offerings, and community engagement. Revenue streams likely include membership fees, event participation fees, and sponsorships from local partners such as Gaffel and Rheinenergie. The target customer segments include families, children, seniors, and fitness enthusiasts. Growth indicators include active event organization and a comprehensive digital presence including social media and newsletter subscriptions. The partnership ecosystem is robust with multiple local sponsors and service providers. Operationally, the club focuses on inclusivity and broad sports engagement, positioning itself as a key community institution in Cologne.

Security posture

The website demonstrates a mature security posture with mandatory HTTPS, CSRF protection in forms, and GDPR-compliant cookie consent mechanisms. However, the absence of security headers such as Content-Security-Policy and lack of published security policies or incident response contacts represent gaps. No vulnerabilities or exposed sensitive data were detected in the analysis. The site does not appear to use extensive third-party tracking or analytics beyond Mailchimp for newsletters, reducing privacy risks. Overall, the security posture is good but could be improved by implementing recommended HTTP security headers and publishing a formal security policy.

Recommendations

  1. Implement HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Publish a dedicated security policy and provide incident response contact information to improve transparency and readiness.
  3. Add a security.txt file at the root domain to facilitate responsible vulnerability disclosure.
  4. Regularly audit and update third-party scripts and dependencies to mitigate potential vulnerabilities.
  5. Enhance accessibility features to improve usability for all users, including those with disabilities.

Contact details published on the site

Addresses
Legal name
ASV Köln e.V.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ASV Köln e.V.
Description
Seit über 90 Jahren verbindet uns alle mitten in Köln der Spaß und die Freude am Sport. Der ASV Köln bietet Ihnen ein sportliches zu Hause für ein vielfältig aktives Leben.
Key services
Fitness courses and training, Kindersport (children's sports), Various sports disciplines (e.g., Cheerleading, Floorball, Karate, Triathlon), Events organization (e.g., Nachtlauf, Brückenlauf), Membership and community engagement, Wellness and nutritional coaching, Childcare services
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, SVG graphics, Swiper.js (carousel/slider), AJAX forms
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CSRF token in forms
  • Cookie consent mechanism

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Marketing tools
Mailchimp (newsletter subscription form)
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content and no blocking detected.
  2. Strong focus on community sports and fitness activities in Cologne.
  3. Comprehensive navigation with multi-level menus and clear structure.
  4. Multiple forms for contact and newsletter subscription with GDPR compliance.
  5. Cookie consent modal with detailed options and explanations.
  6. Social media presence on Instagram, Facebook, and YouTube.
  7. Partner logos indicate established local partnerships.
  8. No explicit security policy or incident response info found.
  9. No visible security headers detected in provided data.
  10. No analytics scripts explicitly detected except Mailchimp for newsletter.
Technical notes

Notes

The website is built using modern web standards with clean HTML5 and CSS3, supported by JavaScript for interactivity and AJAX form submissions. SVG graphics are used for logos and icons, ensuring scalability and crisp visuals. The site is mobile responsive with adaptive images and viewport settings. Performance is moderate, with room for optimization in image loading and script management. No major CMS or frameworks are detected, suggesting a custom or lightweight platform. Hosting is managed via your-server.de, indicating a dedicated or VPS environment. SEO is well addressed with meta tags and Open Graph data. Accessibility is basic but could be improved with ARIA roles and better keyboard navigation support.
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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