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Security report for headliner.cz

Headliner · Media · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

55/100

Risk levelMedium

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

Headliner is a Czech music magazine and media platform providing news, interviews, podcasts, and cultural content primarily targeting Czech-speaking music enthusiasts. The website offers a digital magazine, podcasts, newsletters, and music news articles, positioning itself as a niche media outlet in the Czech Republic. The presence of official logos such as the Ministry of Culture and OSA indicates recognized legitimacy within the cultural sector. Technically, the website employs modern web technologies including responsive images, JavaScript ES modules, and analytics tools like Matomo and Google Analytics. The site is mobile-optimized with good SEO and basic accessibility features. However, some security headers are missing, and no explicit security or incident response policies are published. Security posture is generally good with HTTPS enforced and cookie consent implemented, but improvements are recommended in security headers and vulnerability disclosure mechanisms. The absence of WHOIS data limits domain registration trust verification, though the website content and external trust signals support its legitimacy. Overall, the website is professionally designed, content-rich, and compliant with privacy regulations, making it a trustworthy source for music and cultural content in its market segment.

Scanned

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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook

      What to do: Document all third-party data sharing in your privacy policy

  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 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 headliner.cz

This scan found 22 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
95
Security headers
45
Email security
60
DNS health
65
Network security
40
GDPR outside view
25
Average
55

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

Headliner operates as a specialized media company focused on music and cultural journalism in the Czech Republic. Its business model revolves around digital content publishing, including a digital magazine, podcasts, and newsletters, monetized likely through advertising and sponsorships. The target audience consists of music fans and cultural consumers primarily within the Czech-speaking community. The company leverages partnerships with cultural institutions and festivals, enhancing its market position. Growth indicators include mobile app availability and active social media engagement. The company maintains a professional online presence but lacks publicly visible detailed corporate information such as founding year or parent company data.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS enforced and cookie consent mechanisms in place, reflecting GDPR compliance. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of key security headers (e.g., Content Security Policy, HSTS) and lack of published security policies or incident response contacts indicate room for improvement. There is no evidence of a vulnerability disclosure program or security.txt file. The site uses reputable analytics tools but with moderate user tracking. Overall, the security posture is adequate for a media website but could be enhanced to reduce risk and improve trust.

Recommendations

  1. Implement comprehensive security headers including Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), X-Frame-Options, and X-XSS-Protection.
  2. Publish explicit security and incident response policies, including contact channels for vulnerability reporting.
  3. Consider adding a security.txt file to facilitate responsible vulnerability disclosure.
  4. Enhance accessibility features to improve compliance and user experience for all users.
  5. Improve transparency by providing clear business contact information such as verified emails and phone numbers.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Headliner
Description
Headliner is a Czech music magazine and media platform offering news, interviews, podcasts, and articles focused on music and cultural events.
Key services
Digital music magazine, Music news and articles, Podcasts, Newsletter subscription
Content quality
good
Branding
consistent

Technology

Stack
Matomo analytics, Google Analytics (gtag.js), JavaScript ES modules, Responsive images with WebP and JPEG, CSS stylesheets, Nette framework (inferred from form attributes)
Frameworks
Nette (inferred)
Platforms
Web, iOS app, Android app
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Secure forms with validation

Analytics and tracking

Services
Matomo, Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo
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 signs of WAF or blocking mechanisms.
  3. Strong focus on music and cultural content with multimedia support.
  4. Good privacy and cookie consent implementation.
  5. No direct contact emails or phone numbers visible; contact via form only.
  6. WHOIS data unavailable, limiting domain trust verification.
  7. Use of modern web technologies and analytics tools.
  8. No visible security headers detected in HTML source.
  9. No explicit terms of service page found.
Technical notes

Notes

The website uses a modern technology stack with ES modules, responsive images in WebP and JPEG formats, and asynchronous loading of analytics scripts. It leverages Matomo and Google Analytics for user tracking and performance monitoring. The site appears to be built on the Nette framework, inferred from form attributes and AJAX usage. Performance is moderate with good mobile optimization and SEO practices. However, the absence of detected CMS or hosting provider information limits full infrastructure assessment. The site could benefit from enhanced security headers and improved accessibility compliance to reduce technical risks.
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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