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Security report for nic.cz

CZ.NIC, z. s. p. o. · Technology · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view and SSL/TLS.

Security score

68/100

Risk levelMedium

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

CZ.NIC, z. s. p. o. operates as the official registry for .cz domain names, providing domain registration, DNSSEC security, and related internet infrastructure services primarily targeting Czech internet users and registrants. The website presents a professional and consistent brand image with a focus on domain management, auctions, and internet security education. The technical infrastructure leverages modern JavaScript libraries, Django framework, and integrates analytics and IPv6 testing widgets, indicating a mature digital presence. Security posture is strong with HTTPS enforced, secure forms, and cookie consent mechanisms, although explicit security headers and privacy policies are lacking. The absence of WHOIS data is notable but may be due to registry policies rather than malicious intent. Overall, the site is trustworthy and well-maintained but could improve transparency and compliance documentation.

Scanned

This is an earlier scan of nic.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

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 Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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: Facebook, Twitter, LinkedIn

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

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

Keep watching nic.cz

This scan found 21 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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  • 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
65
Security headers
70
Email security
85
DNS health
75
Network security
100
GDPR outside view
10
Average
68

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

CZ.NIC holds a critical position as the national domain registry for the Czech Republic, serving a large user base with over 1.5 million registered .cz domains. Its business model centers on domain registration services, auctions, and DNS security technologies like DNSSEC. The organization maintains partnerships with various internet and security projects, enhancing its ecosystem. The website content and linked domains reflect a strong focus on internet infrastructure and security education. Growth indicators include active news, blogs, and community engagement. The lack of visible contact details and WHOIS transparency may limit some trust aspects but does not detract from its authoritative market position.

Security posture

The website demonstrates a solid security foundation with HTTPS, CSRF protection on forms, and cookie consent mechanisms. However, the absence of explicit security headers such as Content-Security-Policy and X-Frame-Options is a gap. No vulnerabilities or exposed sensitive data were detected in the HTML content. The site lacks a published security policy or incident response contact information, which are important for transparency and compliance with GDPR and NIS2 directives. The WHOIS data absence is unusual for a registry and reduces domain registration trust. Overall, the security posture is good but could be enhanced by publishing clear policies and improving header configurations.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service pages accessible from the main navigation or footer.
  2. Add explicit security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to improve browser security.
  3. Provide clear contact information including security incident response contacts and data protection officer details.
  4. Implement and publish a security.txt file to facilitate vulnerability disclosure and improve transparency.
  5. Review WHOIS data availability and ensure domain registration information is publicly accessible or clearly explained to improve trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CZ.NIC, z. s. p. o.
Description
CZ domain registry.
Key services
Domain registration, Domain auctions, DNSSEC support, Statistics, Online chat support
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.2.1, Nivo Slider, Piwik/Matomo analytics, IPv6 widget from test-ipv6.cz
Frameworks
Django
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by https URL usage)
  • No exposed sensitive data in HTML
  • Secure form with CSRF token
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Piwik/Matomo
Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
Piwik/Matomo
Marketing tools
Piwik/Matomo analytics
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 WAF or blocking detected
  3. WHOIS data unavailable, possibly due to registry policy or server error
  4. Strong focus on domain registration and DNS security services
  5. Cookie consent implemented with a consent mechanism
  6. No explicit privacy policy or terms of service pages found
  7. No explicit contact emails or phone numbers visible on main page
  8. Use of modern JavaScript libraries and analytics tools
  9. Good mobile and accessibility support
  10. No obvious security vulnerabilities detected in HTML content
Technical notes

Notes

The website uses a modern technology stack including jQuery 3.2.1, Nivo Slider for UI elements, and Django as the backend framework. Analytics are handled via Piwik/Matomo with cookies disabled for tracking, indicating privacy-conscious analytics. The site is mobile responsive and includes accessibility features such as skip links and language selection. Performance is moderate with asynchronous script loading and deferred JavaScript. The IPv6 widget integration shows commitment to modern internet standards. No CMS was explicitly detected, suggesting a custom or Django-based CMS. Hosting provider details are not disclosed. Overall, the technical implementation is solid with room for improvement in security headers and privacy documentation.
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. 68/100Medium29 findingsView report
  2. 68/100Medium29 findingsView report
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