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Security report for datovy-trezor.cz

Česká pošta, s.p. · Government · Czech Republic

Medium risk. 5 critical or high findings in GDPR outside view and SSL/TLS.

Security score

73/100

Risk levelMedium

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

Česká pošta, s.p. operates the Datový trezor service, a supplementary digital mailbox capacity service for existing data mailboxes in the Czech Republic. The website provides a secure, government-backed platform for ordering and managing this service, targeting both individual and business users who require secure digital communication. The site is well-branded with official logos and provides clear contact information, terms, and privacy policies, reflecting a mature digital service offering from a national postal authority. Technically, the site leverages modern web technologies including React and Liferay, ensuring a responsive and accessible user experience. Security posture is strong with HTTPS enforcement and standard security headers, though some improvements in vulnerability disclosure and incident response transparency could be made. Overall, the site is trustworthy and professional, though the lack of WHOIS data limits domain registration trust analysis.

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

5 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. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching datovy-trezor.cz

This scan found 18 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
77
Security headers
75
Email security
72
DNS health
90
Network security
100
GDPR outside view
25
Average
73

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

The business is positioned as a government service provider in the digital communication sector, offering value-added services to data mailbox users. Its competitive advantage lies in official backing and integration with national postal infrastructure. Revenue streams likely include service fees for mailbox capacity. The target customers are Czech residents and businesses using data mailboxes. Partnerships with related domains such as postaonline.cz and mojedatovaschranka.cz strengthen its ecosystem. The business model is service-oriented with a focus on compliance and secure digital communication. Growth potential exists in expanding digital services and capacity offerings.

Security posture

The website demonstrates a solid security foundation with HTTPS, security headers, and secure form handling. No obvious vulnerabilities or exposed sensitive data were detected. However, the absence of a published security policy, incident response contacts, or vulnerability disclosure mechanisms indicates room for improvement in transparency and readiness. Compliance with GDPR is evident through privacy policies and cookie consent mechanisms. The security score is good but could be enhanced by formalizing incident response and vulnerability management disclosures.

Recommendations

  1. Publish a security.txt file to facilitate vulnerability reporting and improve transparency.
  2. Add explicit incident response contact information on the website.
  3. Regularly update and audit third-party libraries to mitigate potential vulnerabilities.
  4. Enhance privacy compliance disclosures with detailed data retention policies.
  5. Implement automated security scanning and penetration testing to maintain high security standards.

Contact details published on the site

Addresses
Legal name
Česká pošta, s.p.
VAT number
CZ47114983
Registration number
A7565 (Městský soud v Praze)
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Česká pošta, s.p.
Description
Datový trezor is a supplementary service to data mailboxes offered by Česká pošta, s.p. It allows ordering additional capacity for existing data mailboxes.
Key services
Datový trezor service ordering, Data mailbox capacity management, Online payment and order management
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery 3.5.0, YUI 3.11.0, Liferay Portal, React (PostaOnlineReact-theme), SlickNav
Frameworks
Liferay, React
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Secure cookies
  • Input validation on forms
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
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 in Czech language and targeted at Czech data mailbox users.
  3. Official branding and contact details present.
  4. No suspicious or malicious content detected.
  5. WHOIS data unavailable, limiting domain registration trust analysis.
Technical notes

Notes

The website is built on a modern technology stack including React and Liferay CMS, supported by JavaScript libraries such as jQuery and YUI. The site is mobile-optimized and accessible, with good SEO practices evident from meta tags and structured navigation. Performance is moderate, with room for optimization in resource loading. The hosting environment is not explicitly identified but appears stable. Technical debt is minimal, though continuous modernization and security updates are recommended to maintain operational integrity.
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. 73/100Medium27 findingsView report
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