Skip to main content

Security report for dnssec.cz

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

Medium risk. 7 critical or high findings in GDPR outside view, Email security and 1 other check.

Security score

63/100

Risk levelMedium

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

The website www.dnssec.cz is operated by CZ.NIC, the official Czech domain registry association responsible for managing the .CZ top-level domain and promoting DNS security technologies such as DNSSEC. The site provides educational content about DNSSEC, tools to test DNSSEC protection on user connections and domains, and contact information for support. It targets Czech internet users, domain owners, and ISPs, positioning itself as an authoritative source on DNS security in the Czech Republic. Technically, the site uses a straightforward technology stack including jQuery and custom JavaScript, with CSS for styling. The site is accessible, uses HTTPS, and embeds multimedia content such as YouTube videos. However, it lacks advanced security headers and comprehensive privacy or cookie policies. Mobile optimization and accessibility are basic but functional. From a security perspective, the site demonstrates good practices by using HTTPS and avoiding exposed sensitive data. However, the absence of security headers and incident response information limits its security maturity. The missing WHOIS data for the domain reduces transparency and trustworthiness from a registration standpoint, although the CZ.NIC branding and contact details support legitimacy. Overall, the site is a reliable educational resource on DNSSEC with moderate technical sophistication and a good business credibility profile. Improvements in privacy compliance, security headers, and WHOIS transparency would enhance trust and security posture.

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

7 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

  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

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

Keep watching dnssec.cz

This scan found 22 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
65
Security headers
70
Email security
60
DNS health
75
Network security
100
GDPR outside view
10
Average
63

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention dnssec.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for dnssec.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

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 operates as a non-profit essential entity in the technology sector, specifically managing the Czech Republic's .CZ domain registry and promoting DNS security. Its business model focuses on providing registry services, internet infrastructure stability, and educational outreach on DNSSEC technology. The organization holds a strong market position as the authoritative domain registry in the Czech Republic, serving ISPs, domain owners, and internet users. Revenue streams likely include domain registration fees and related services. The website reflects a mature partnership ecosystem with links to official CZ.NIC resources and no commercial advertising. Growth indicators include active promotion of DNSSEC adoption and user tools. The organization's operations emphasize trust, transparency, and internet security.

Security posture

The website's security posture is moderate. It uses HTTPS, which is mandatory for secure communications, and avoids exposing sensitive data. However, it lacks important security headers such as Content Security Policy, HSTS, and X-Frame-Options, which are recommended to mitigate common web attacks. No vulnerability disclosure or incident response information is provided, limiting transparency and readiness for security incidents. The absence of privacy and cookie policies also indicates gaps in compliance with data protection regulations such as GDPR. No known vulnerabilities or malicious content were detected. Overall, the site is secure for informational purposes but would benefit from enhanced security controls and compliance documentation.

Recommendations

  1. Implement comprehensive privacy and cookie policies to improve GDPR compliance and user trust.
  2. Add security headers including Content Security Policy, HSTS, and X-Frame-Options to strengthen web security.
  3. Publish vulnerability disclosure and incident response information to enhance transparency and readiness.
  4. Improve mobile optimization and accessibility to broaden user reach and compliance with standards.
  5. Investigate and resolve the missing WHOIS data issue to improve domain registration transparency and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CZ.NIC, z. s. p. o.
Description
The website educates about DNSSEC technology, its importance for securing DNS queries, and offers tools to test DNSSEC protection for internet connections and .CZ domains. It is managed by CZ.NIC, the association responsible for the .CZ domain registry and DNS infrastructure.
Key services
DNSSEC education, DNSSEC testing tools, Domain registry management for .CZ domains
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.2.1, JavaScript, CSS, HTML5
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
70/100
Good practices seen
  • Use of HTTPS (implied by URL https://)
  • No visible exposed sensitive data
  • No vulnerable libraries detected in provided scripts

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

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 about DNSSEC technology.
  2. No privacy, cookie, or terms of service policies found on the site.
  3. Contact information is clearly provided with official CZ.NIC phone and email.
  4. No security incident response or vulnerability disclosure information is present.
  5. No analytics or tracking scripts detected beyond jQuery and custom JS.
  6. No advertising or marketing tools detected.
  7. WHOIS data is missing, which is unusual for a domain registry site.
  8. Site content is in Czech language and targets Czech internet users.
  9. Website uses HTTPS and includes embedded YouTube video content.
  10. Forms present for DNSSEC testing and domain checking with basic input fields.
Technical notes

Notes

The website employs a simple but effective technical stack with jQuery 3.2.1 and custom JavaScript for interactivity, supported by CSS for styling. The HTML structure is valid and includes meta tags for viewport and description, aiding SEO. Performance is moderate with embedded YouTube content potentially impacting load times. Mobile responsiveness is basic but present. No CMS or advanced frameworks are detected, indicating a custom or lightweight implementation. Hosting provider details are not discernible from the content. Technical debt appears low, but modernization opportunities include adopting modern JavaScript frameworks and improving accessibility features. Security technical risks include missing security headers and lack of documented incident response.
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. 63/100Medium31 findingsView report
Reviews of this site

Share your experience with dnssec.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 dnssec.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.