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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

The website www.datovy-trezor.cz is an official online portal operated by Česká pošta, s.p., the Czech postal service, providing the Datový trezor service which supplements existing data mailboxes with additional data storage capacity. The site targets users of data mailboxes in the Czech Republic, offering a secure and government-backed service with clear ordering and management capabilities. The business model is service-oriented, focusing on paid data storage linked to official government infrastructure, positioning it as a trusted market player in the Czech Republic. Technically, the website leverages a modern tech stack including Liferay Portal, React, and jQuery, with a responsive design optimized for desktop and mobile users. The site employs HTTPS with strong SSL configuration, uses Google Tag Manager for analytics, and implements cookie consent mechanisms, reflecting a mature digital infrastructure. However, some security headers are missing, and no explicit security policy or incident response contact is published. From a security perspective, the site demonstrates good practices such as secure form validation and encrypted connections. The absence of exposed vulnerabilities or suspicious content supports a strong security posture. The lack of WHOIS data is consistent with CZ NIC policies and does not detract from the site's legitimacy, given the strong branding and official contact information. Overall, the site is professional, trustworthy, and compliant with privacy regulations, serving a critical government service. Strategic recommendations include enhancing security headers, publishing a security policy, and maintaining regular vulnerability assessments to further strengthen trust and compliance.

Scanned

This is an earlier scan of datovy-trezor.cz. View the latest report

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

Česká pošta, s.p. operates the Datový trezor service as a government-backed data storage solution linked to data mailboxes. The company leverages its authoritative position in the Czech postal sector to offer this supplementary service, targeting both individual and business users requiring secure data storage. The business model is subscription-based with clear pricing and ordering workflows. The partnership ecosystem includes related domains such as postaonline.cz and mojedatovaschranka.cz, which support order management and data mailbox services. The company benefits from strong brand recognition and trust in the Czech market, with growth potential tied to increasing digital communication needs and regulatory compliance requirements.

Security posture

The website exhibits a solid security posture with HTTPS enforced and secure form handling. The presence of cookie consent and privacy policy indicates compliance with GDPR. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options suggests room for improvement. No incident response or vulnerability disclosure information is provided, which could be enhanced to improve transparency and readiness. No vulnerabilities or suspicious activities were detected in the content or scripts. Overall, the security maturity is good but could benefit from formalized policies and additional technical controls.

Recommendations

  1. Implement and configure security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a dedicated security policy and incident response contact information on the website.
  3. Conduct regular security audits and vulnerability scans of third-party libraries and dependencies.
  4. Enhance accessibility features to improve compliance and user experience for all users.
  5. Maintain transparency on data retention policies and update privacy documentation accordingly.

Contact details published on the site

Addresses
Legal name
Česká pošta, s.p.
VAT number
CZ47114983
Registration number
47114983
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 customers to order additional data storage capacity linked to an existing data mailbox.
Key services
Datový trezor data storage service, Online ordering and management of data storage capacity, Customer support via call center and email
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery 3.5.0, YUI 3.11, Liferay Portal, React (PostaOnlineReact-theme), AJAX, CSS3
Frameworks
Liferay Portal, React
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Secure form inputs with validation
  • Cookie consent mechanism implemented

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 challenge.
  2. Content is in Czech language and targeted at Czech data mailbox users.
  3. No suspicious or malicious content detected.
  4. Strong branding and official contact information present.
  5. No explicit security policy or incident response contact found.
  6. WHOIS data is unavailable, consistent with CZ NIC policies.
Technical notes

Notes

The website is built on a robust technical foundation using Liferay Portal CMS combined with React and jQuery for dynamic content rendering. The use of modern JavaScript libraries and CSS frameworks supports responsive and accessible design. Performance is moderate with room for optimization, particularly in loading combined scripts and styles. SEO is basic with canonical links and meta tags present but could be improved with richer metadata and structured data. Hosting details are not explicitly identified but the domain uses HTTPS with a valid SSL certificate. The site includes cookie consent and analytics integration via Google Tag Manager, indicating a mature approach to user tracking and compliance.
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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