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Security report for klubklus.cz

Tomáš Klus s.r.o. · Media · Czech Republic

High risk. 9 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

45/100

Risk levelHigh

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

The website klubklus.cz serves as the official fan club platform for Czech artist Tomáš Klus, providing exclusive multimedia content, online concerts, and community engagement features. The business operates under Tomáš Klus s.r.o., a small media entity focused on delivering unique fan experiences through membership and content subscription. The site is well-branded and targets Czech-speaking fans, leveraging social media and digital marketing tools to enhance reach. Technically, the site employs modern JavaScript frameworks and integrates Google Analytics and Facebook Pixel for tracking. It uses HTTPS with a valid SSL certificate, ensuring secure communications. However, the absence of security headers and cookie consent mechanisms indicates room for improvement in security and privacy compliance. The site is mobile-optimized with good design and navigation, though SEO and accessibility could be enhanced. From a security perspective, the site shows a moderate posture with no visible vulnerabilities or exposed sensitive data. The lack of WHOIS data due to privacy protection slightly reduces trust but is common for small entertainment businesses. No incident response or security policies are publicly disclosed, which could be addressed to improve transparency. Overall, klubklus.cz is a legitimate, well-maintained fan club website with a solid business model and moderate technical maturity. Strategic improvements in privacy compliance, security headers, and public security policies would enhance its trustworthiness and user confidence.

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

    • 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

  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';…

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

Keep watching klubklus.cz

This scan found 28 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

€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

Email alerts on material changes and an exportable JSON history of every change.

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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
30
Email security
60
DNS health
65
Network security
40
GDPR outside view
10
Average
45

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

Klubklus.cz occupies a niche position as a fan club platform for a popular Czech artist, leveraging exclusive content and community features to engage fans. Its business model centers on membership and content access, supported by partnerships with design and technical service providers. The company demonstrates consistent branding and uses social media effectively to maintain audience connection. Growth potential lies in expanding digital offerings and improving compliance and security standards to meet evolving regulatory requirements and user expectations.

Security posture

The website maintains a good baseline security posture with HTTPS enforced and no visible sensitive data leaks. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options reduces protection against common web attacks. No explicit incident response or vulnerability disclosure policies are present, which limits preparedness and transparency. The use of third-party tracking scripts introduces moderate user tracking, necessitating improved cookie consent and privacy controls to align with GDPR. Overall, the security maturity is moderate but can be enhanced with targeted improvements.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options.
  2. Add a cookie consent banner/mechanism to comply with GDPR and improve user privacy transparency.
  3. Publish clear security and incident response policies accessible to users.
  4. Enhance SEO and accessibility features to improve site reach and usability.
  5. Consider publishing WHOIS or domain registration transparency information to boost trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tomáš Klus s.r.o.
Description
Official fan club website for Tomáš Klus, offering exclusive content such as videos, diaries, online concerts, and chat. It serves as a community platform for fans to engage and access unique materials related to the artist.
Key services
Exclusive videos, Online concerts and chat, Artist diaries and reflections, Merchandise and vouchers
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Google Analytics, Facebook Pixel, Bootstrap (carousel), Vue.js (bzuco cloud embed)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager and Facebook Pixel with async loading

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Facebook Pixel
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 no blocking or WAF challenges.
  2. WHOIS data is unavailable, indicating privacy protection or domain registration issues.
  3. Site uses modern tracking and analytics tools but lacks explicit cookie consent.
  4. No direct contact emails or phone numbers found on the site.
  5. Privacy policy and terms of service pages are present and linked in footer.
  6. Site content is in Czech language targeting local audience.
  7. No security headers detected in HTML source; potential improvement area.
  8. Site uses HTTPS with valid SSL certificate.
  9. Social media links are official and consistent with the artist's brand.
Technical notes

Notes

The website uses a modern JavaScript-based frontend with integrations for Google Tag Manager, Google Analytics, and Facebook Pixel for marketing and analytics. The presence of a custom or proprietary CMS is inferred but not explicitly identified. Performance is moderate with asynchronous script loading and responsive design. However, the lack of security headers and cookie consent mechanisms indicates technical debt in security and privacy compliance. Hosting provider details are not disclosed, and WHOIS data is unavailable, which could be improved for transparency. Overall, the technical infrastructure supports the business needs but requires enhancements in security and compliance.
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

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