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Security report for sparta.cz

AC Sparta Praha · Media · Czech Republic

Medium risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

71/100

Risk levelMedium

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

AC Sparta Praha operates an official website serving as the primary digital presence for the renowned Czech football club. The site offers comprehensive information about the club, including news, match results, player details, and ticket sales, targeting football fans and sports enthusiasts. The business model focuses on fan engagement and service provision related to the club's activities. The website is well-branded and consistent with the club's identity, reflecting a medium-sized organization with a long-standing history dating back to 1998. Technically, the website leverages modern web technologies including React and Next.js frameworks, hosted behind Cloudflare CDN for performance and security. It integrates multiple analytics and marketing tools such as Google Analytics, Microsoft Clarity, and Cookiebot for cookie consent management, demonstrating a mature digital infrastructure. The site is optimized for mobile devices and accessibility, with good SEO practices evident from meta tags and structured data. From a security perspective, the site enforces HTTPS with strong SSL configuration and employs Cloudflare for DDoS protection and CDN services. Cookie consent is implemented with granular user controls, aligning with GDPR requirements. However, explicit security policies, incident response contacts, and vulnerability disclosure mechanisms are not publicly available, representing areas for improvement. Overall, the website presents a low-risk profile with strong legitimacy indicators, professional design, and compliance with privacy regulations. Strategic recommendations include publishing detailed security and incident response policies, enhancing transparency on data protection officers, and maintaining regular audits of third-party scripts to mitigate potential vulnerabilities.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
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

4 findings rated critical or high. Fix these first.

  1. 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';…

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching sparta.cz

This scan found 20 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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Recommended

€25per month

  • 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
65
Security headers
20
Email security
75
DNS health
80
Network security
100
GDPR outside view
88
Average
71

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

AC Sparta Praha holds a prominent position in Czech football, leveraging its official website to engage fans and provide essential club information. The business model centers on sports entertainment and fan services, including ticket sales and news dissemination. The club benefits from a loyal local and regional fan base, with digital channels supporting its market presence. The integration of multiple advertising and analytics platforms indicates active monetization and marketing strategies. While the site lacks visible partner or subsidiary domains, it connects with major advertising networks and tracking services, reflecting a robust partnership ecosystem. Growth indicators include consistent content updates and use of advanced web technologies, positioning the club well within the sports media sector.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, use of Cloudflare for CDN and security, and a comprehensive cookie consent mechanism supporting GDPR compliance. Security headers are assumed present given Cloudflare usage, though explicit header details are not provided. No vulnerabilities or exposed sensitive data were detected in the analyzed content. The absence of published security policies, incident response contacts, and vulnerability disclosure programs suggests gaps in transparency and readiness. The use of multiple third-party scripts necessitates ongoing security audits to prevent supply chain risks. Overall, the site maintains good security hygiene but would benefit from enhanced documentation and communication of security practices.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency and user trust.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  3. Provide clear contact information for security incidents, such as security@ or abuse@ email addresses.
  4. Regularly review and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance GDPR compliance disclosures by naming the Data Protection Officer and detailing data processing practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
AC Sparta Praha
Description
Official website of AC Sparta Prague football club providing news, match results, player information, and ticket sales.
Key services
Football club information, Match results, Player profiles, Ticket sales
Content quality
good
Branding
consistent

Technology

Stack
React, Next.js, Cloudflare CDN, Cookiebot, Google Tag Manager, Microsoft Clarity
Frameworks
Next.js
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with granular controls
  • Use of Cloudflare for DDoS protection and CDN

Analytics and tracking

Services
Google Analytics, Microsoft Clarity, Gemius
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Adform, Google DoubleClick
Tracking pixels
Microsoft Clarity, Facebook Pixel, Twitter Pixel, Seznam.cz tracking
Marketing tools
Cookiebot
Transparency
good

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is professionally designed and well-maintained.
  2. Comprehensive cookie consent mechanism implemented with detailed cookie categorization.
  3. No explicit contact emails or phone numbers found on the homepage HTML content.
  4. No visible terms of service or security policy pages detected.
  5. Use of multiple third-party analytics and advertising services with appropriate consent.
  6. No signs of malicious or suspicious content.
  7. WHOIS data supports legitimacy and long-term operation.
Technical notes

Notes

The website is built using modern JavaScript frameworks, primarily React and Next.js, enabling server-side rendering and optimized performance. Hosting via Cloudflare provides CDN acceleration and security features including SSL termination and DDoS mitigation. The site employs Cookiebot for cookie consent management, integrating with Google Tag Manager and Microsoft Clarity for analytics and user behavior tracking. Performance is optimized with preloading of critical assets and fonts. Accessibility considerations are evident in ARIA roles and keyboard navigation support. SEO is supported through comprehensive meta tags and Open Graph data. No CMS was explicitly detected, suggesting a custom or proprietary solution. Overall, the technical infrastructure is robust, scalable, and aligned with current best 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. 71/100Medium28 findingsView report
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