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Security report for denik.cz

Deník.cz · Media · Czech Republic

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

Security score

64/100

Risk levelMedium

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

Deník.cz is a prominent Czech news portal providing comprehensive regional, national, and international news coverage. It serves a broad audience in the Czech Republic with content spanning politics, culture, sports, and everyday life. The website is part of the Vltava Labe Media group, a significant player in the Czech media landscape. The site demonstrates a mature digital presence with structured data, social media integration, and a professional design tailored for desktop and mobile users. Technically, Deník.cz employs modern web technologies including Google Tag Manager, Gemius analytics, and content delivery via Cloudfront, ensuring moderate performance and good SEO practices. Security-wise, the site enforces HTTPS and includes standard security headers, though it lacks a publicly visible security policy or vulnerability disclosure program. Privacy compliance is well addressed with clear privacy and cookie policies and consent mechanisms, aligning with GDPR requirements. Overall, Deník.cz presents a trustworthy and professional media outlet with a strong market position in Czech regional news.

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

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

    • 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 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';…

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

Keep watching denik.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

€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
75
Security headers
30
Email security
75
DNS health
80
Network security
100
GDPR outside view
25
Average
64

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

Deník.cz operates within the media sector, focusing on regional news dissemination in the Czech Republic. Its business model revolves around digital advertising and content publishing, targeting general public consumers interested in local and national news. The site benefits from the backing of Vltava Labe Media, enhancing its market reach and credibility. The presence of multiple analytics and advertising technologies indicates a data-driven approach to audience engagement and monetization. The company maintains active social media channels, reinforcing its brand and audience interaction. While the WHOIS data is unavailable, the brand's established reputation and consistent online presence mitigate concerns about legitimacy. The site’s content quality and professional design support its competitive advantage in the Czech media market.

Security posture

Deník.cz exhibits a solid security posture with mandatory HTTPS enforcement and implementation of key security headers such as HSTS, X-Content-Type-Options, and Content-Security-Policy. No exposed sensitive data or vulnerable libraries were detected in the analysis. However, the absence of a public security policy, incident response contacts, or vulnerability disclosure mechanisms suggests room for improvement in transparency and proactive security communication. The site’s privacy compliance is robust, with GDPR-aligned policies and consent management. Overall, the security maturity is good for a media website, but enhancing incident response readiness and publishing security documentation would strengthen trust and resilience.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Implement a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  3. Enhance accessibility features to improve compliance and user experience for all users.
  4. Provide clear incident response contact channels to improve transparency and readiness.
  5. Regularly review and update third-party libraries and tracking technologies to minimize vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Deník.cz
Description
Novinky a zprávy z regionů Čech i ze světa. Nejdůležitější informace a události z jednotlivých obcí, dění v politice, kultuře, sportu i v běžném životě.
Key services
Regional news, National news, World news, Politics, Culture, Sports, Public affairs
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Gemius (analytics), Cloudfront CDN, Privacy Center SDK
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Analytics (via GTM), Gemius
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google DoubleClick
Tracking pixels
Gemius
Marketing tools
Privacy Center SDK
Transparency
basic

Site quality

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

Key observations

  1. Website is a professional news portal focused on Czech regional and national news.
  2. Content is in Czech language and targets Czech audience.
  3. No WHOIS data available, likely due to privacy protection or registry restrictions.
  4. Uses multiple analytics and advertising technologies including Google Tag Manager and Gemius.
  5. Has privacy and cookie policies with consent mechanisms, indicating GDPR compliance.
  6. No explicit security policy or incident response contact found publicly.
  7. No vulnerability disclosure or security.txt file detected.
  8. No adult or NSFW content detected.
  9. Website is accessible without WAF or security challenge blocking.
Technical notes

Notes

The website leverages a modern JavaScript-based front-end with asynchronous loading of analytics and advertising scripts, including Google Tag Manager and Gemius. The use of Cloudfront CDN suggests a distributed hosting infrastructure aimed at performance optimization. The site employs structured data (JSON-LD) for SEO and content clarity, enhancing search engine visibility. While the CMS is not explicitly identified, the presence of custom scripts and fonts indicates a tailored platform. Performance is moderate, with good mobile optimization and SEO practices, though accessibility could be improved. The technical stack supports a professional media publishing environment but should continue evolving to maintain performance and security standards.
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. 64/100Medium30 findingsView report
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