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Security report for ceskadigitalniknihovna.cz

Česká digitální knihovna · Education · Czech Republic

High risk. 10 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

44/100

Risk levelHigh

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

Česká digitální knihovna is a Czech national digital library portal providing access to a wide range of digitized cultural heritage materials including books, newspapers, graphics, maps, and sound recordings. The platform targets researchers, students, historians, and the general public interested in Czech cultural heritage. The website is built using modern web technologies such as Angular 15 and Material Design components, ensuring a responsive and accessible user experience. Google Tag Manager is used for analytics and tracking purposes. Security posture is generally good with HTTPS enforced and no visible vulnerabilities, but lacks some security headers and formal privacy and cookie policies. The domain registration is consistent and appropriate for the business age and purpose, indicating legitimacy.

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

10 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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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 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 ceskadigitalniknihovna.cz

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  • TLS certificates and expiry
  • DNS records
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  • 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
72
Security headers
25
Email security
40
DNS health
75
Network security
40
GDPR outside view
10
Average
44

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 website operates as a non-commercial digital library gateway, aggregating and providing free access to digitized cultural and historical documents. It holds a strong national position in the Czech Republic's education and cultural sectors. The business model focuses on public service rather than revenue generation. The platform's technical maturity is moderate with modern frameworks but could improve in privacy compliance and security transparency. No direct contact or business registration details are provided, which is common for public or governmental digital library services. The partnership ecosystem is not explicitly visible from the website content.

Security posture

The website demonstrates a baseline security posture with HTTPS enabled and no exposed sensitive data in the HTML. However, it lacks visible security headers such as Content-Security-Policy and X-Frame-Options, which are recommended best practices. There is no published security policy, incident response contacts, or vulnerability disclosure information, which limits transparency and readiness for security incidents. The use of Google Tag Manager introduces moderate user tracking, but no cookie consent mechanism or privacy policy is present to inform users or comply with GDPR fully. Overall, the security maturity is moderate but could be enhanced by adding formal policies and security headers.

Recommendations

  1. Implement and publish a comprehensive privacy policy and cookie policy with user consent mechanisms to improve GDPR compliance.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  3. Publish a security policy and incident response contact information to improve transparency and readiness.
  4. Create and expose a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  5. Enhance SEO metadata and structured data to improve search engine visibility and indexing.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Česká digitální knihovna
Description
Česká digitální knihovna is a national gateway to digital libraries, providing access to collections such as books, newspapers, graphics, maps, and sound recordings primarily in Czech language. It serves as a digital library platform aggregating cultural and historical documents.
Key services
Digital access to books, Digital access to newspapers and magazines, Access to historical maps and graphics, Search and browse digital collections
Content quality
good
Branding
consistent

Technology

Stack
Angular 15, Google Tag Manager, Material Design Components, Roboto font, JavaScript ES Modules
Frameworks
Angular
Performance
moderate
Mobile
good
Accessibility
good
SEO
basic

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
poor

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a national digital library portal for Czech cultural heritage.
  2. No explicit privacy, cookie, or terms of service policies found on the homepage.
  3. No contact emails or phone numbers explicitly provided in the visible content.
  4. Uses modern Angular framework and Material Design components.
  5. Includes Google Tag Manager for analytics and tracking.
  6. No security.txt or vulnerability disclosure information found.
  7. No visible security headers in HTML content; server headers not provided for analysis.
  8. No social media links or company contact information found in the HTML.
  9. Content is in Czech language and targeted at Czech users.
  10. No adult or questionable content detected.
Technical notes

Notes

The website uses Angular 15 framework with Material Design components, providing a modern and responsive user interface. The use of ES modules and deferred script loading indicates attention to performance optimization. Google Tag Manager is integrated for analytics, but no other third-party CMS or hosting provider details are evident. The site is mobile optimized with good accessibility features such as focus outlines and keyboard navigation support. However, SEO optimization is basic with limited meta tags and no structured data like JSON-LD detected. The site performance is moderate, with room for improvement in loading speed and SEO practices.
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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