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Security report for eosclubzone.cz

EOS · Other · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

55/100

Risk levelMedium

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

EOS.cz is a Czech-based SaaS platform designed to streamline the administration and communication needs of sports clubs and other organizations such as communities, associations, and chambers. The platform offers a comprehensive suite of tools including membership databases, payment processing integrated with banking, communication channels, attendance tracking, event nominations, electronic registrations, GDPR compliance features, document sharing, and a mobile app. The website demonstrates a strong market presence with over 850 clubs and nearly 190,000 members, supported by client testimonials and mobile app store ratings. Technically, the site employs modern JavaScript frameworks like Alpine.js and Swiper.js, integrates analytics and user behavior tracking tools such as Google Analytics and Hotjar, and implements cookie consent mechanisms. Security posture is robust with HTTPS and multiple security headers, though explicit privacy and security policies are not published on the site. WHOIS data for the domain is unavailable, which slightly impacts trust but does not detract from the professional presentation and functionality of the platform.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
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. 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 Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, LinkedIn, YouTube

      What to do: Document all third-party data sharing in your privacy policy

  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 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 eosclubzone.cz

This scan found 23 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
45
Email security
70
DNS health
75
Network security
40
GDPR outside view
25
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

Technical appendix

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

Business context

Business profile

EOS operates in the niche market of sports club management software, targeting a broad range of sports and organizational types. Its SaaS business model relies on monthly subscription fees starting at 449 CZK, with free activation and onboarding support. The platform's competitive advantage lies in its all-in-one approach, integrating administrative, financial, and communication functions with mobile accessibility. The presence of numerous client testimonials and integration with official sports federation data enhances credibility. The company appears to focus on the Czech and Slovak markets primarily, with multilingual support via related domains. Growth indicators include a large user base and diverse sport coverage. Partnerships with app stores and integration with banking systems suggest a mature ecosystem. However, the lack of publicly available corporate registration details and WHOIS transparency may warrant further due diligence.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, modern security headers (CSP, HSTS, X-Frame-Options, etc.), and a cookie consent mechanism aligned with GDPR requirements. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of published security policies, incident response contacts, or vulnerability disclosure mechanisms indicates room for improvement in transparency and readiness. The use of third-party analytics and tracking tools is balanced with user consent controls, reflecting a moderate privacy compliance level. Overall, the security measures are adequate for a SaaS platform handling personal and payment data but would benefit from enhanced documentation and incident response preparedness.

Recommendations

  1. Publish a comprehensive privacy policy detailing GDPR compliance and data handling practices.
  2. Add clear terms of service and security policy pages accessible from the website footer or main navigation.
  3. Provide explicit contact information for security incidents, including dedicated security or abuse email addresses.
  4. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  5. Enhance transparency around company registration and domain ownership to improve trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
EOS
Description
Členská platforma EOS je aplikace pro každý sportovní klub i jiné organizace – komunity, kroužky, komory, asociace. EOS šetří kupu času, nervů a peněz, protože nabízí řadu chytrých nástrojů, které pomáhají spravovat agendu klubů a organizací.
Key services
Členská databáze a exporty, Platby a napojení na bankovnictví, Komunikace v klubu, Docházka a tréninky, Nominace na zápasy, Elektronické přihlášky na akce, GDPR a online registrace, Sdílení a odevzdávání dokumentů, Mobilní aplikace, Klubový web napojený na platformu
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Alpine.js, Swiper.js, Hotjar, Google Tag Manager, Google Analytics, CookieConsent by Orest Bida
Frameworks
Alpine.js
Platforms
Web, Mobile (iOS and Android apps)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of modern security headers
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics, Hotjar
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Hotjar
Marketing tools
Hotjar
Transparency
good

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. No WHOIS data available from CZ NIC registry for domain www.eos.cz.
  3. No explicit privacy policy or terms of service pages found in the HTML content.
  4. Cookie consent mechanism is implemented with a visible banner and scripts.
  5. No direct contact emails or phone numbers found in the HTML content.
  6. Multiple client testimonials with photos and video references enhance trust.
  7. Mobile apps available on iOS and Android with high ratings.
  8. Use of modern JavaScript frameworks and libraries for UI and analytics.
  9. Strong security headers and HTTPS usage observed.
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website uses a modern and performant technology stack including Alpine.js for reactive UI components, Swiper.js for interactive carousels, and integrates analytics tools like Google Analytics and Hotjar for user behavior insights. The site is mobile-optimized with responsive design and offers native mobile applications on iOS and Android platforms. Security headers and HTTPS are properly configured, contributing to a secure browsing experience. The site loads efficiently with preloaded fonts and asynchronous script loading. No CMS was explicitly detected, suggesting a custom or headless architecture. Hosting provider details are not disclosed. Overall, the technical implementation supports a high-quality user experience with minimal technical debt and good scalability potential.
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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