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 an official educational platform managed by CZ.NIC, the Czech domain registry operator, focusing on DNSSEC technology and its importance for securing internet domain name resolution. It provides users with educational content, testing tools for DNSSEC protection on their internet connections and .CZ domains, and guidance on securing domains via DNSSEC-enabled registrars. The site targets Czech internet users, domain owners, and ISPs, positioning itself as a trusted source for DNS security information in the Czech Republic. Technically, the website employs standard web technologies including jQuery and custom JavaScript, with CSS for styling. The site is moderately optimized for performance and mobile devices but lacks advanced accessibility features and modern frameworks. No CMS or hosting provider details are evident. The site is fully accessible without WAF or blocking mechanisms. From a security perspective, the site uses HTTPS and avoids exposing sensitive data or vulnerable libraries. However, it lacks important security headers and explicit privacy or cookie policies, which are critical for compliance and user trust. The absence of WHOIS data for the domain reduces transparency, though the branding and contact details strongly indicate legitimacy. No incident response or vulnerability disclosure information is provided. Overall, the site is a credible and useful resource for DNSSEC education but would benefit from enhanced privacy compliance, security header implementation, and improved transparency regarding domain registration data.

Scanned

This is an earlier scan of dnssec.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

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 entity managing the .CZ domain registry and promoting DNS security technologies like DNSSEC. The website serves as an educational and support portal rather than a commercial business, focusing on raising awareness and providing tools for DNSSEC adoption. Its market position is strong within the Czech internet infrastructure ecosystem, leveraging official registry authority. The business model is service-oriented, funded likely through registry fees and government or community support. The target audience includes Czech internet users, domain registrants, and ISPs. The site shows no signs of commercial advertising or monetization, emphasizing trust and education. Partnerships appear limited to official registry-related entities. Growth indicators are not explicit but the site supports national internet security initiatives.

Security posture

The website demonstrates a moderate security maturity level. It uses HTTPS, avoiding common pitfalls like exposed credentials or vulnerable libraries. However, the lack of security headers such as Content Security Policy, HSTS, and X-Frame-Options reduces its defense-in-depth posture. No explicit incident response or vulnerability disclosure mechanisms are visible, which could delay response to security events. Privacy compliance is weak due to missing privacy and cookie policies, potentially exposing the organization to regulatory risks under GDPR. The site does not employ tracking or analytics, reducing privacy concerns but also limiting user behavior insights. Overall, the security culture appears focused on DNSSEC education but lacks comprehensive web security best practices.

Recommendations

  1. Implement comprehensive privacy and cookie policies to ensure GDPR compliance and user trust.
  2. Add standard security headers (CSP, HSTS, X-Frame-Options) to enhance protection against common web attacks.
  3. Publish clear incident response and vulnerability disclosure information to improve security transparency and readiness.
  4. Improve mobile responsiveness and accessibility to broaden user reach and comply with accessibility standards.
  5. Increase domain registration transparency by ensuring WHOIS data is available or providing justification for privacy protection.
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 provides tools to test DNSSEC protection for internet connections and .CZ domains.
Key services
DNSSEC education, DNSSEC testing tools, Domain registration support, DNS infrastructure management
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 (assumed from URL)
  • No visible exposed sensitive data
  • No vulnerable libraries detected

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 educational content about DNSSEC
  2. No privacy or cookie policies explicitly found
  3. Contact information is clearly provided with official CZ.NIC emails and phone numbers
  4. No security.txt or incident response info present
  5. No analytics or tracking scripts detected
  6. No advertising or marketing tools present
  7. WHOIS data is missing, limiting domain registration transparency
  8. Website uses standard web technologies with moderate performance and basic mobile optimization
Technical notes

Notes

The website is built with basic web technologies including jQuery 3.2.1 and custom JavaScript, styled with CSS. It lacks modern frameworks or CMS platforms, indicating a lightweight and possibly custom-built infrastructure. Performance is moderate with no explicit optimization indicators. Mobile optimization and accessibility are basic, suggesting room for improvement. No analytics or tracking scripts are detected, which simplifies privacy but limits marketing insights. Hosting provider details are not discernible from the content. The absence of security headers and missing WHOIS data represent technical risks that should be addressed to improve security posture and trustworthiness.
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.