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Security report for eos.cz

Other · Czech Republic

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

Security score

56/100

Risk levelMedium

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

The website eos.cz represents a professional SaaS platform focused on providing comprehensive membership and administrative management tools for sports clubs and similar organizations primarily in the Czech Republic. The platform offers a wide range of features including member databases, payment processing integrated with banking, communication tools, attendance tracking, event nominations, electronic registrations, GDPR compliance tools, document sharing, and mobile applications for iOS and Android. The site demonstrates a mature digital presence with modern JavaScript frameworks and a responsive design optimized for mobile devices. Analytics and tracking are implemented via Google Analytics and Hotjar, with a cookie consent mechanism in place, though explicit privacy and terms of service pages are not clearly found. Security posture is generally good with HTTPS enforced, but could be improved by adding security headers and publishing security policies. WHOIS data is unavailable, which slightly reduces trust signals, but the professional content and extensive client references mitigate concerns. Overall, the site is well-positioned in its niche with a strong user base and modern technical infrastructure.

Scanned

This is an earlier scan of eos.cz. View the latest report

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 eos.cz

This scan found 22 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
45
Email security
70
DNS health
85
Network security
40
GDPR outside view
25
Average
56

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 eos.cz, from OffSeq Breach.

Total records
32
Employees
0
Customers
30
Third parties
2
Weak passwords
13%

15 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for eos.cz.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

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

Business context

Business profile

EOS.cz operates in the niche of sports club and community management, targeting a broad range of organizations including sports clubs, associations, and other community groups. The business model is subscription-based SaaS with monthly fees starting at 449 CZK. The platform's competitive advantage lies in its all-in-one approach, integrating administrative, communication, payment, and event management functionalities with mobile app support. The company boasts over 840 clubs and 188,000 members across 70 sports, indicating significant market penetration. Testimonials from named clients and integration with various sports federations enhance credibility. The platform also offers website integration and data synchronization with sports associations, positioning it as a comprehensive ecosystem solution. Growth potential is supported by multi-language support and mobile app availability. The company appears to maintain a consistent brand and professional online presence, though explicit corporate details and contact information are limited on the site.

Security posture

The website enforces HTTPS, ensuring encrypted communication. It employs cookie consent mechanisms aligned with GDPR requirements, indicating awareness of privacy regulations. However, the absence of explicit privacy policy and terms of service pages reduces transparency. No security.txt or vulnerability disclosure information is found, which could hinder coordinated vulnerability reporting. Security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options are not detected, representing an area for improvement to mitigate common web attacks. No exposed sensitive data or vulnerable libraries were identified in the analysis. The use of reputable third-party analytics and tracking tools is noted, but user tracking is moderate, and privacy compliance could be enhanced. Incident response contact channels are not publicly available. Overall, the security posture is solid but could benefit from enhanced transparency and technical hardening.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service pages prominently linked on the website.
  2. Implement and configure security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to improve protection against common web vulnerabilities.
  3. Create and publish a security.txt file or vulnerability disclosure policy to facilitate responsible security reporting.
  4. Provide clear contact information including support emails and phone numbers to enhance business credibility and user trust.
  5. Regularly review and audit third-party scripts and tracking tools to ensure compliance with privacy regulations and minimize user tracking.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

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, Online registrace a GDPR souhlasy, Sdílení a odevzdávání dokumentů, Mobilní aplikace a notifikace, Napojení na klubový web
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, iOS App, Android App
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • 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
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. WHOIS data is unavailable, limiting domain registration trust analysis.
  3. Website uses modern JavaScript frameworks and libraries.
  4. Cookie consent is implemented, but privacy and terms pages are not clearly found.
  5. No explicit contact emails or phone numbers found in the visible content.
  6. Multiple external domains used for analytics, CDN, and app stores.
  7. Strong focus on sports club management with extensive feature set.
  8. Mobile app presence with high user ratings indicated.
  9. No security.txt or explicit security policies found.
  10. No signs of adult or questionable content.
Technical notes

Notes

The website uses a modern front-end stack including Alpine.js for reactive components, Swiper.js for carousels, and integrates analytics tools like Google Analytics and Hotjar. Fonts are loaded with preload hints for performance optimization. The site is mobile-optimized with responsive design and accessible navigation. Cookie consent is managed via a third-party library. Video content is embedded with fallback images and modal dialogs for user interaction. The site lacks explicit CMS identification but uses a custom or proprietary platform with CDN-hosted assets. Performance is moderate with asynchronous script loading and preloading of fonts. Accessibility features such as ARIA roles and keyboard navigation are partially implemented. SEO is supported by meta tags and Open Graph data. Hosting provider and server details are not disclosed. Overall, the technical implementation is modern and well-structured, supporting a good 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

Earlier scans of this domain

  1. 55/100Medium31 findingsView report
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