Skip to main content

Security report for dnnt.cz

Národní knihovna České republiky · Education · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

60/100

Risk levelMedium

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

The website dnnt.cz is an official digital platform operated by the National Library of the Czech Republic, providing access to literary works that are unavailable on the market. It serves readers, authors, and libraries by facilitating remote access to these works through partnerships with various Czech libraries. The platform is positioned as a government-supported non-profit service focused on education and cultural preservation. Technically, the site is built on WordPress 5.8.10, utilizing common web technologies such as jQuery, Bootstrap, and Font Awesome. It employs Google Analytics for visitor tracking and implements a cookie consent mechanism compliant with GDPR. The site is hosted likely by Active24, the domain registrar, and uses HTTPS with a strong SSL configuration. The design is professional and mobile-optimized, with good navigation and content relevance. From a security perspective, the website demonstrates good practices including HTTPS enforcement and cookie consent. However, it lacks explicit security headers and a public security policy or incident response information. No vulnerabilities or exposed sensitive data were detected. The absence of a vulnerability disclosure policy or security.txt file suggests room for improvement in transparency and security maturity. Overall, dnnt.cz is a trustworthy and well-maintained digital library platform with a strong focus on accessibility and compliance. Strategic recommendations include enhancing security headers, publishing security policies, and improving accessibility features to further strengthen its security posture and user trust.

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

8 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 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"

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

Keep watching dnnt.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.

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.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
30
Email security
60
DNS health
75
Network security
100
GDPR outside view
25
Average
60

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

Dnnt.cz operates as a specialized digital library service under the National Library of the Czech Republic, targeting readers, authors, and libraries interested in accessing works unavailable on the market. Its business model is non-profit and government-backed, focusing on cultural preservation and education. The platform leverages partnerships with multiple regional libraries to provide remote access services, positioning itself as a central hub for unavailable literary content in the Czech Republic. The use of official branding and integration with national digital library registries enhances its credibility. Growth indicators include ongoing updates and integration with partner libraries. The absence of commercial advertising and affiliate programs aligns with its non-profit status. Strategic partnerships with regional libraries form a robust ecosystem supporting its mission.

Security posture

The security posture of dnnt.cz is solid but not comprehensive. The site uses HTTPS with a valid SSL certificate, ensuring encrypted communications. Cookie consent is implemented with granular controls, supporting GDPR compliance. However, the lack of security headers such as Content-Security-Policy and X-Frame-Options reduces protection against certain web attacks. No public security policy or incident response contacts are provided, limiting transparency and preparedness communication. No vulnerabilities or exposed sensitive data were found in the HTML content. The use of third-party scripts like Google Analytics is standard but requires ongoing monitoring for security. Overall, the site is secure for its purpose but would benefit from enhanced security policies and headers to improve resilience and trust.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a clear security policy and incident response contact information on the website.
  3. Add a security.txt file to facilitate vulnerability disclosure and improve transparency.
  4. Enhance accessibility features to meet higher compliance standards and improve user experience.
  5. Regularly audit third-party scripts and dependencies to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Národní knihovna České republiky
Description
The website provides access to works unavailable on the market through digital libraries and remote access via various Czech libraries. It is a project by the National Library of the Czech Republic focused on digital access to unavailable works.
Key services
Access to unavailable works, Remote access via partner libraries, Information and support for authors and readers
Content quality
good
Branding
consistent

Technology

Stack
WordPress 5.8.10, jQuery 3.6.0, Bootstrap, Font Awesome, Google Fonts, Google Analytics
Frameworks
WordPress
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of deferred loading for scripts

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

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 no blocking or WAF challenges.
  2. Content is primarily in Czech language targeting Czech readers and libraries.
  3. Strong focus on providing access to unavailable literary works via digital libraries.
  4. Uses WordPress CMS with standard plugins and Google Analytics for tracking.
  5. Cookie consent mechanism is implemented with detailed cookie categories.
  6. No direct contact emails or phone numbers found on the main page.
  7. No explicit security policy or incident response information publicly available.
  8. No vulnerability disclosure or security.txt file detected.
  9. Website uses HTTPS with good SSL configuration.
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on a stable and widely used CMS platform, WordPress 5.8.10, with standard plugins and libraries such as jQuery, Bootstrap, and Font Awesome. It uses Google Fonts and Google Analytics for styling and analytics respectively. The site loads scripts asynchronously and defers emoji scripts to optimize performance. The design is responsive and mobile-friendly, with good SEO practices including meta tags and canonical links. Hosting appears to be provided by Active24, a reputable Czech hosting and registrar service. Performance is moderate with room for optimization. No critical technical debt or outdated libraries were detected, but security headers are missing which is a technical risk. Overall, the technical infrastructure is solid and suitable for the site's purpose.
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

Reviews of this site

Share your experience with dnnt.cz. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review dnnt.cz.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.