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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

55/100

Risk levelMedium

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

EOS.cz is a Czech-based SaaS platform designed to streamline administration, communication, and web presence for sports clubs and other organizations such as communities, associations, and clubs. The platform offers a comprehensive suite of tools including member management, payment processing, communication channels, attendance tracking, nominations, electronic applications, GDPR compliance features, document sharing, and mobile applications. It serves a significant user base with over 222,000 active members and 980+ clubs across 71 sports, positioning itself as a leading solution in its niche. The website is professionally designed, mobile-optimized, and features rich multimedia content including video testimonials and app store badges, enhancing user trust and engagement. Technically, the site employs modern JavaScript frameworks like Alpine.js and Swiper.js, integrates analytics and tracking tools such as Google Tag Manager and Hotjar, and implements cookie consent mechanisms, reflecting a mature digital infrastructure. Security posture is strong with HTTPS enforced and standard security headers present, though explicit privacy policies and terms of service documents are not found, representing an area for improvement. WHOIS data is unavailable, which slightly impacts domain trustworthiness, but the overall professional presentation and extensive client testimonials support legitimacy. No adult or questionable content is present, making the site safe for general audiences.

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 eos.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.

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
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

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 operates in the sports and community management sector, targeting sports clubs, associations, and similar organizations primarily in the Czech Republic. Its business model revolves around providing a SaaS platform that centralizes club administration, payments, communication, and web management. The platform's competitive advantage lies in its comprehensive feature set, user-friendly interface, and integration with mobile apps, which facilitate modern, paperless club management. The presence of numerous testimonials and video endorsements from recognized clubs indicates strong market acceptance and customer satisfaction. The company appears to focus on growth through digital transformation of traditional club management processes, leveraging technology to save time and reduce administrative burdens. Partnerships or related domains were not explicitly identified, suggesting a focused ecosystem. Revenue streams likely include subscription fees and possibly service fees for web development or premium features. The platform's scalability is demonstrated by its support for both small and large clubs across multiple sports disciplines.

Security posture

The website demonstrates a solid security foundation with HTTPS enabled and multiple security headers implemented, including HSTS, CSP, X-Content-Type-Options, X-Frame-Options, and Referrer-Policy. The use of cookie consent mechanisms aligns with privacy best practices. No exposed sensitive data or vulnerable libraries were detected in the analyzed content. However, the absence of explicit privacy policies, terms of service, and security incident response information indicates gaps in compliance and transparency. There is no evidence of a vulnerability disclosure program or security.txt file, which could improve incident response readiness and stakeholder trust. The integration of third-party analytics and tracking tools like Google Tag Manager and Hotjar introduces moderate user tracking, which should be managed carefully to maintain GDPR compliance. Overall, the security posture is good but could be enhanced by publishing comprehensive privacy and security policies and establishing formal incident response channels.

Recommendations

  1. Publish a comprehensive privacy policy detailing GDPR compliance and data handling practices.
  2. Add clear terms of service and security policy documents 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 a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  5. Regularly review and audit third-party scripts and tracking tools to minimize privacy risks and ensure compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
Členská platforma EOS je aplikace pro sportovní kluby i jiné organizace – komunity, asociace, kroužky. EOS nabízí řadu chytrých nástrojů pro pomoc s administrativou, komunikací i webem na jednom místě, bez papíru, šetří čas a nervy.
Key services
Členská databáze a exporty, Platby a napojení na bankovnictví, Komunikace s členy a rodiči, Docházka a tréninky, Nominace na zápasy, Elektronické přihlášky, GDPR a online registrace, Sdílení dokumentů, Mobilní aplikace, Klubový web
Content quality
excellent
Branding
consistent

Technology

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

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of modern JS libraries

Analytics and tracking

Services
Google Tag Manager, 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 multimedia.
  2. No WHOIS data available, which limits domain trust analysis.
  3. No explicit privacy policy or terms of service pages found.
  4. Cookie consent mechanism is implemented and functional.
  5. No direct contact emails or phone numbers found on main page HTML.
  6. Strong focus on sports club management with extensive features.
  7. Multiple testimonials with named references and video links enhance trust.
  8. Use of modern JavaScript frameworks and libraries.
  9. Mobile apps available with high ratings on app stores.
  10. No signs of adult or questionable content.
Technical notes

Notes

The website employs a modern technology stack featuring Alpine.js for reactive UI components, Swiper.js for interactive carousels, and integrates analytics tools such as Google Tag Manager and Hotjar for user behavior insights. The site is well-optimized for mobile devices, with dedicated app store badges linking to iOS and Android applications. Performance appears moderate with efficient use of preloaded fonts and asynchronous script loading. Accessibility considerations are present, including semantic HTML and ARIA attributes. SEO is supported by appropriate meta tags, Open Graph tags, and structured content. Hosting details and CMS platform were not explicitly identified. The site could benefit from enhanced documentation of backend infrastructure and security configurations to further improve transparency and technical robustness.
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. 56/100Medium30 findingsView report
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