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Security report for sareza.cz

Sportovní a rekreační zařízení města Ostravy s.r.o. · Hospitality · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view and Security headers.

Security score

62/100

Risk levelMedium

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

Sportovní a rekreační zařízení města Ostravy s.r.o. operates the Sareza website, providing a comprehensive range of sports, recreational, wellness, and hospitality services primarily in Ostrava, Czech Republic. The website targets families and general public seeking leisure and sports activities, offering facilities such as swimming pools, water parks, sports arenas, wellness centers, and hotel accommodations. The company holds a strong regional presence with partnerships from local and national brands, positioning itself as a key provider of recreational services in the region. Technically, the website employs modern frontend technologies including Alpine.js, Livewire, and Splide.js, with integration of Google Tag Manager for analytics. The site is mobile-optimized and demonstrates good SEO practices, though accessibility features are basic. Performance is moderate with room for improvement in loading speed and accessibility compliance. From a security perspective, the site enforces HTTPS and avoids exposing sensitive data. However, it lacks important security headers and a cookie consent mechanism, which are recommended for enhanced security and privacy compliance. The absence of WHOIS data reduces domain trustworthiness, though the website content and business information appear legitimate and professional. Overall, the website is well-structured, content-rich, and trustworthy for its intended audience. Strategic improvements in security headers, privacy compliance, and domain registration transparency would further strengthen its security posture and business credibility.

Scanned

This is an earlier scan of sareza.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 Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  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 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';…

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Keep watching sareza.cz

This scan found 18 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
95
Security headers
55
Email security
70
DNS health
85
Network security
40
GDPR outside view
25
Average
62

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

The company operates in the hospitality and government sectors, providing essential sports and recreational services to the public in Ostrava. Its business model focuses on facility management, event hosting, wellness services, and accommodation. The presence of multiple partner brands and official city links indicates a strong partnership ecosystem. The website content and structure suggest a medium-sized organization with a focus on community engagement and service quality. Revenue streams likely include facility rentals, ticket sales, wellness services, and hotel bookings. Growth indicators include active event announcements and continuous facility upgrades. The company maintains a professional online presence with consistent branding and clear communication channels.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS enforced and no visible sensitive data leaks. However, the lack of security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options is a notable gap. No vulnerability disclosures or incident response information is provided, which limits transparency in security readiness. Cookie consent mechanisms are absent despite the presence of cookie policies, indicating partial GDPR compliance. The use of third-party scripts like Google Tag Manager introduces potential risks that require regular auditing. Overall, the security posture is adequate for the business type but can be improved by implementing recommended headers, consent mechanisms, and incident response disclosures.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to mitigate common web vulnerabilities.
  2. Add a visible cookie consent banner to comply fully with GDPR and enhance user privacy transparency.
  3. Publish a security policy and incident response plan on the website to improve trust and preparedness.
  4. Regularly audit and update third-party scripts and dependencies to avoid vulnerabilities.
  5. Ensure domain WHOIS information is complete and publicly accessible to improve domain trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sportovní a rekreační zařízení města Ostravy s.r.o.
Description
Zábava a sportovní vyžití pro celou vaši rodinu. Vodní svět SAREZA v centru Ostravy, který je svým špičkovým vybavením a zázemím na evropské úrovni.
Key services
Swimming pools, Water parks, Sports arenas, Wellness and relaxation centers, Hotel accommodation, Event rentals
Content quality
good
Branding
consistent

Technology

Stack
Alpine.js, Livewire, Splide.js, Google Fonts, Google Tag Manager
Frameworks
Livewire (Laravel PHP framework component)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of secure external scripts

Analytics and tracking

Services
Google Analytics (via Google Tag Manager)
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 and no blocking mechanisms.
  2. WHOIS data is unavailable, which is unusual and may indicate privacy protection or registration issues.
  3. Website uses modern frontend technologies and integrates Google Tag Manager for analytics.
  4. Contact information is clearly provided with company email and phone number.
  5. Privacy and cookie policies are present but cookie consent mechanism is missing.
  6. No explicit security policy or incident response information found.
  7. No vulnerability disclosure or security.txt file detected.
  8. Content is family-friendly and safe for general audiences.
  9. Website has good SEO and mobile optimization.
  10. External links include official partners and social media profiles.
Technical notes

Notes

The website uses a modern tech stack with Alpine.js for reactive UI components, Livewire for server-driven frontend interactions, and Splide.js for carousel functionality. Google Fonts are used for typography, and Google Tag Manager handles analytics and tracking. The site is mobile responsive with good SEO meta tags and Open Graph data for social sharing. Performance is moderate, with some large images and scripts that could be optimized further. Accessibility features are basic, with some ARIA roles and keyboard navigation support but room for improvement. No CMS is explicitly detected, suggesting a custom or framework-based backend. Hosting provider details are not disclosed. Overall, the technical infrastructure supports a professional and user-friendly experience but could benefit from performance and accessibility enhancements.
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. 63/100Medium26 findingsView report
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