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Security report for tenisportal.cz

Media · Czech Republic

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

59/100

Risk levelMedium

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

The website tenisportal.cz is a Czech tennis news portal providing comprehensive tennis information including news, live results, rankings, statistics, and betting tips focused on ATP and WTA tours. It targets tennis fans and bettors in the Czech Republic and offers a well-structured, content-rich platform with good mobile optimization and SEO practices. The technical infrastructure includes modern JavaScript, CSS, Google Tag Manager for analytics, and OneTrust for cookie consent management. The site uses HTTPS and has a secure login form with password visibility toggle, indicating attention to user security. However, the absence of WHOIS data limits domain trust assessment, and no explicit privacy policy or terms of service pages were found, which are important for compliance and user trust. Overall, the site is professional and functional but could improve transparency and security posture.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

7 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';…

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Keep watching tenisportal.cz

This scan found 27 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
62
Security headers
15
Email security
55
DNS health
80
Network security
100
GDPR outside view
40
Average
59

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

Tenisportal.cz holds a solid position in the Czech sports media sector, focusing on tennis content and betting tips. Its business model likely relies on advertising revenue and possibly affiliate betting partnerships. The site serves a niche but engaged audience of tennis enthusiasts and bettors. The presence of Google site verification and structured navigation indicates a mature digital presence. However, lack of visible company registration or contact details may limit business credibility for some users. The site integrates with major ad networks and tracking services, suggesting monetization through ads. Growth potential exists through enhanced compliance, security transparency, and expanded content offerings.

Security posture

The website demonstrates a moderate security posture with HTTPS enforced and secure login forms. Cookie consent is managed via OneTrust, supporting GDPR compliance. However, no explicit security headers such as Content-Security-Policy or X-Frame-Options were detected, which could improve protection against common web attacks. The absence of a published privacy policy and terms of service pages is a compliance gap. No security.txt or vulnerability disclosure information was found, limiting transparency for security researchers. No vulnerabilities or exposed sensitive data were observed in the analyzed content. Overall, the site is reasonably secure but would benefit from enhanced security headers, published policies, and incident response contact information.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service pages to improve compliance and user trust.
  2. Implement and configure security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Provide clear contact information including security and incident response contacts.
  4. Add a security.txt file to facilitate vulnerability disclosure and improve security transparency.
  5. Regularly audit third-party scripts and ad networks to minimize security risks and improve performance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
Kompletní tenisové informace - zprávy, live výsledky tenisu, žebříčky a archivní výsledky z ATP a WTA. Soutěže a sázkařské tipy na tenis.
Key services
Tennis news, Live tennis results, Rankings and statistics, Betting tips
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, CSS, Google Tag Manager, OneTrust Cookie Consent, Seznam SSP Ads
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent implemented
  • Secure login form with password toggle

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Seznam SSP
Marketing tools
OneTrust Cookie Consent
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich tennis-related content
  2. No WHOIS data available, limiting domain trust assessment
  3. Cookie consent implemented with OneTrust
  4. No explicit privacy policy or terms of service pages found
  5. No direct contact emails or phone numbers found on homepage
  6. Uses Google Tag Manager and Seznam SSP for analytics and ads
  7. Secure login form present with password visibility toggle
  8. No security.txt or vulnerability disclosure information found
  9. No explicit security headers detected in HTML content
  10. Website is mobile optimized and SEO friendly
Technical notes

Notes

The website uses a modern front-end stack with JavaScript and CSS, leveraging Google Tag Manager for analytics and OneTrust for cookie consent management. It loads fonts from Google Fonts and ads from Seznam SSP, indicating integration with regional ad networks. The site is mobile optimized with responsive design and accessible navigation. Performance is moderate with room for improvement in loading speed and accessibility features. No CMS or hosting provider was explicitly identified from the HTML content. The site uses HTTPS with a valid SSL configuration. Technical debt appears low, but adding security headers and improving compliance documentation would enhance the overall technical maturity.
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. 54/100Medium36 findingsView report
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