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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 the Czech Republic's .cz top-level domain, providing domain registration, DNS services, and internet security initiatives such as DNSSEC and CSIRT. The website serves a broad audience including domain registrants, registrars, and IT professionals within the Czech Republic. It offers domain search functionality, statistical data, and promotes IPv6 adoption and DNS security. The organization holds a strong market position as the authoritative registry for .cz domains. Technically, the website is built on a modern stack including Django backend, jQuery, and Nivo Slider for UI elements. It integrates Piwik/Matomo for analytics with privacy-conscious settings disabling cookies for tracking. The site is mobile-optimized, accessible, and SEO-friendly, with a moderate performance profile. External integrations include an IPv6 widget and online chat support. From a security perspective, the site enforces HTTPS, uses CAPTCHA on forms, and implements cookie consent mechanisms. DNSSEC is actively promoted and statistics are transparently shared. However, explicit security headers are not detected, and no published security policy or vulnerability disclosure page is found. Incident response is supported through CSIRT links. No WHOIS data is publicly available, likely due to registry privacy policies, but the site’s branding and content strongly indicate legitimacy. Overall, CZ.NIC’s website demonstrates a high level of professionalism, security awareness, and compliance with privacy regulations. It is a trusted source for domain registration and internet infrastructure services in the Czech Republic. Strategic recommendations include enhancing security headers, publishing a security policy, and providing clearer incident response contacts to further strengthen trust and compliance.

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 20 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 role in the Czech internet ecosystem as the official .cz domain registry. Its business model centers on domain registration services, DNS infrastructure management, and internet security projects. The organization targets registrars, domain owners, and IT professionals, leveraging partnerships with related projects like mojeID, DNSSEC, and CSIRT. The website reflects a medium-sized entity with a focused technology sector presence. Revenue streams likely include domain registration fees and service contracts. The company maintains a strong partnership ecosystem with multiple related domains and projects, enhancing its market position and service offerings. Growth indicators include active promotion of IPv6 and DNS security technologies, as well as community engagement through blogs and newsletters.

Security posture

The security posture of CZ.NIC’s website is robust, with enforced HTTPS, CAPTCHA-protected forms, and cookie consent mechanisms indicating compliance with privacy regulations. DNSSEC is prominently supported, reflecting a commitment to DNS security. However, the absence of explicit security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options represents an area for improvement. The lack of a published security policy or vulnerability disclosure program limits transparency. Incident response readiness is partially addressed via CSIRT links but could be enhanced with direct contact information. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the site demonstrates a mature security culture appropriate for a domain registry but would benefit from formalizing some security practices and disclosures.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to mitigate common web attacks.
  2. Publish a comprehensive security policy page outlining security practices and commitments.
  3. Provide explicit incident response contact details and consider publishing a security.txt file for vulnerability disclosures.
  4. Enhance transparency around data protection officer contact and GDPR compliance details.
  5. Regularly audit third-party scripts and dependencies to ensure no vulnerable libraries are used.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CZ.NIC, z. s. p. o.
Description
CZ.NIC is the Czech domain registry responsible for managing the .cz top-level domain and related internet infrastructure services.
Key services
Domain registration and management, DNSSEC security services, Domain auctions, Online chat support, Internet security projects (CSIRT, DNSSEC, etc.)
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 external HTTPS links and analytics)
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • CAPTCHA implemented on forms
  • DNSSEC promoted and statistics shown

Analytics and tracking

Services
Piwik/Matomo
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Piwik/Matomo
Marketing tools
Email newsletter (eepurl.com)
Transparency
good

Site quality

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

Key observations

  1. Official Czech domain registry website
  2. Comprehensive domain search and statistics features
  3. Strong focus on DNS security and IPv6 connectivity
  4. Multiple language support (Czech and English)
  5. Active social media presence
  6. No WHOIS data available publicly, likely due to privacy or registry policy
  7. Good privacy and cookie consent implementation
  8. No visible security vulnerabilities or suspicious content
Technical notes

Notes

The website uses a Django backend with jQuery and Nivo Slider for frontend interactivity. Analytics are handled via Piwik/Matomo with privacy-conscious configurations disabling cookies. The site is mobile responsive and accessible, with good SEO practices including meta tags and language support. Performance is moderate, with some external dependencies such as IPv6 widget and online chat scripts. No CMS is explicitly detected, suggesting a custom or framework-based implementation. Hosting provider details are not disclosed. The technical stack is modern and well-maintained, though opportunities exist to improve security headers and formalize vulnerability disclosure mechanisms.
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. 68/100Medium30 findingsView report
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