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Security report for isportsystem.cz

Other · Czech Republic

High risk. 9 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

46/100

Risk levelHigh

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

The website www.isportsystem.cz represents a Czech-based reservation system focused on sports, fitness, wellness, and leisure activities. It targets operators of sports centers, fitness zones, wellness facilities, and organizers of group and individual sports lessons. The business model is SaaS, providing a customizable and continuously updated booking platform with a strong local market presence evidenced by over 20 years of operation and more than 1000 customers. The site content is professionally presented in Czech, with clear navigation and relevant business information, although explicit contact details are not prominently displayed. Technically, the website employs a traditional web stack with jQuery and jQuery UI libraries, along with popular UI components like Fancybox and Unite Gallery. Google Analytics and Google Tag Manager are used for user tracking and analytics. The site is mobile optimized and SEO friendly but uses somewhat outdated JavaScript libraries which may pose security risks. Performance is moderate, and accessibility is basic. From a security perspective, the site uses HTTPS and does not expose sensitive data in the HTML. However, no advanced security headers were detected, and no explicit incident response or security policy information is provided. The absence of a cookie consent mechanism is a compliance gap under GDPR. WHOIS data is unavailable, which limits domain legitimacy verification and slightly reduces trustworthiness. No vulnerabilities or malware indicators were found in the content. Overall, the website is a credible and professional platform for sports reservation services with room for improvement in security practices and privacy compliance. Strategic recommendations include implementing security headers, adding cookie consent, updating JavaScript libraries, and publishing clear security and incident response policies.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 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

9 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

  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 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';…

Need hands-on remediation? Email guard@offseq.com

Keep watching isportsystem.cz

This scan found 24 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
90
Security headers
20
Email security
55
DNS health
80
Network security
20
GDPR outside view
10
Average
46

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

iSportSystem.cz operates as a specialized SaaS provider in the Czech Republic, focusing on reservation management for sports and leisure activities. Its competitive advantage lies in its long market presence, extensive feature set with continuous updates, and customization capabilities tailored to client branding. The business targets a niche market of sports centers, fitness facilities, and wellness providers, leveraging positive customer references and a high volume of monthly reservations as growth indicators. The partnership with rezervujstul.cz suggests a broader ecosystem approach to reservation services. Revenue streams likely include subscription fees or licensing for the reservation software. The company maintains a moderate size with a focused regional presence and a professional digital footprint.

Security posture

The security posture of the website is moderate. The use of HTTPS ensures encrypted communication, and no sensitive data is exposed in the HTML source. However, the absence of key security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options reduces protection against common web attacks. The use of an outdated jQuery version introduces potential vulnerabilities. No explicit security policies, incident response contacts, or vulnerability disclosure programs are published, which limits transparency and readiness for security incidents. GDPR compliance is partially addressed through privacy and terms pages but lacks cookie consent mechanisms. Overall, the site would benefit from enhanced security controls and clearer communication of security practices.

Recommendations

  1. Implement comprehensive security headers including CSP, HSTS, and X-Frame-Options to mitigate common web vulnerabilities.
  2. Add a cookie consent banner/mechanism to ensure compliance with GDPR and other privacy regulations.
  3. Update JavaScript libraries, especially jQuery, to the latest secure versions to reduce vulnerability risks.
  4. Publish explicit security policies and incident response contact information to improve transparency and readiness.
  5. Regularly audit and monitor the website for vulnerabilities and maintain up-to-date software dependencies.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
iSport is a Czech reservation system designed for managing bookings of sports facilities, group exercises, and various leisure activities. It offers graphical customization according to company colors and design, wide configuration options, and intuitive operation. The system is continuously developed with over 80 new features and updates annually, provided free of charge.
Key services
Reservation system for group lessons and courses, Individual sports reservations, Management of sports centers, multifunctional halls, pools, Fitness and wellness facility booking
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.10.2, jQuery UI 1.9.2, Google Analytics, Fancybox, Unite Gallery, Responsive Carousel
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
60/100
Good practices seen
  • Use of HTTPS (implied by Google Analytics and favicon URL)
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

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 rich content in Czech language.
  2. No explicit contact emails or phone numbers found on main page.
  3. Privacy and terms pages exist but cookie consent is missing.
  4. No security.txt or explicit incident response contacts found.
  5. WHOIS data unavailable, limiting domain legitimacy verification.
  6. Use of older jQuery version may pose security risks.
  7. Google Analytics and Tag Manager used for tracking.
  8. No signs of adult or questionable content.
Technical notes

Notes

The website uses a classic web technology stack with jQuery 1.10.2 and jQuery UI 1.9.2, supplemented by UI libraries such as Fancybox and Unite Gallery. Google Analytics and Google Tag Manager are integrated for analytics and marketing purposes. The site is mobile optimized and includes responsive design elements. However, the use of older JavaScript versions indicates technical debt and potential security risks. No modern frameworks (e.g., React, Angular) or CMS platforms were detected. Performance is moderate, with no explicit hosting provider identified. SEO is supported by proper meta tags and structured navigation. Accessibility is basic but could be improved. Overall, the technical implementation is functional but would benefit from modernization and enhanced security practices.
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. 43/100High34 findingsView report
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