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Security report for databazeknih.cz

Databazeknih.cz · Media · Czech Republic

High risk. 9 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

33/100

Risk levelHigh

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

Databazeknih.cz is a leading Czech and Slovak online platform dedicated to books, offering a comprehensive database, user reviews, a book marketplace, and community features. Operated by MAFRA, a.s., it holds a strong market position as the largest and most visited book-related website in the region. The platform targets book enthusiasts and readers, providing services such as book ratings, free eBooks, audiobooks, and discussion forums. Technically, the website employs modern JavaScript libraries, consent management tools, and advertising technologies, ensuring a functional and user-friendly experience with good mobile optimization. Security posture is solid with HTTPS and GDPR compliance, though additional security headers could enhance protection. The absence of WHOIS data limits domain trust analysis but does not detract from the evident legitimacy and professionalism of the site. Overall, Databazeknih.cz demonstrates a mature digital presence with strong content quality and privacy practices.

Scanned

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

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

  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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  3. 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';…

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

Keep watching databazeknih.cz

This scan found 24 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

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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
0
Security headers
15
Email security
55
DNS health
80
Network security
40
GDPR outside view
10
Average
33

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

The business operates in the media sector, focusing on literary content and community engagement. Its competitive advantage lies in its extensive book database and active user base, supported by a robust advertising ecosystem managed by MAFRA, a.s. Revenue streams likely include advertising, affiliate partnerships, and possibly premium content via paywall technologies. The platform serves a broad demographic of Czech and Slovak readers, with growth indicators seen in active community participation and regular content updates. Partnerships such as with Restorio.cz enhance service offerings. Strategic observations suggest continued investment in user experience and privacy compliance will sustain market leadership.

Security posture

The website maintains a good security posture with enforced HTTPS and GDPR-compliant consent mechanisms. Use of third-party scripts for analytics and advertising is managed with user consent, reducing privacy risks. However, the lack of explicit security headers like Content Security Policy and X-Frame-Options presents an area for improvement. No vulnerabilities or exposed sensitive data were detected in the HTML content. Incident response and security policy documentation are not publicly evident, indicating potential gaps in transparency. Overall, the security maturity is moderate to good, suitable for the business type but with room for enhancement.

Recommendations

  1. Implement comprehensive security headers including CSP, HSTS, and X-Frame-Options to mitigate common web attacks.
  2. Publish clear security policy and incident response information to improve transparency and trust.
  3. Conduct regular audits of third-party scripts to minimize risks from external dependencies.
  4. Enhance accessibility features to improve compliance and user experience for all users.
  5. Consider publishing vulnerability disclosure and data protection officer contact information to align with best practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Databazeknih.cz
Description
Databáze knih, hodnocení knih, bazar knih, komentáře, soutěž o knihy. Největší a nejnavštěvovanější knižní web u nás a na Slovensku.
Key services
Book database, User reviews and ratings, Book marketplace (bazar knih), Community discussions, Book recommendations, Free eBooks downloads, Audiobooks
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, jQuery, Google Tag Manager, Google Analytics, Gemius tracking, Didomi Consent Management Platform, Prebid.js (header bidding), Adform, Tinypass (Piano) paywall, CPEX advertising platform
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management for GDPR
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Gemius
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
MAFRA, CPEX, Adform, Seznam Sklik
Tracking pixels
Gemius, Didomi CMP, Piano (Tinypass)
Marketing tools
Didomi Consent Management, Piano paywall
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and no blocking detected.
  2. Strong GDPR and cookie consent compliance with visible banners and detailed settings.
  3. No direct contact emails or phone numbers found on homepage; contact likely via dedicated pages.
  4. Multiple third-party advertising and tracking scripts used, but with user consent mechanisms.
  5. WHOIS data unavailable, limiting domain registration trust analysis.
  6. Website is professionally designed and well maintained with active community features.
Technical notes

Notes

The website uses a modern JavaScript stack including jQuery and various third-party libraries for analytics, advertising, and consent management. It integrates Google Tag Manager, Google Analytics, Gemius tracking, and Piano paywall services, indicating a mature digital marketing and monetization strategy. Performance is moderate with asynchronous script loading and responsive design for mobile users. No CMS is explicitly detected, suggesting a custom or proprietary platform. Hosting details are not disclosed. Technical risks include reliance on multiple external scripts which require ongoing management to prevent security or performance degradation.
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. 45/100High37 findingsView report
  2. 45/100High37 findingsView report
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