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Security report for tzus.cz

Technický a zkušební ústav stavební Praha, s.p. · Government · Czech Republic

Medium risk. 5 critical or high findings in GDPR outside view and Security headers.

Security score

68/100

Risk levelMedium

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

Technický a zkušební ústav stavební Praha, s.p. (TZÚS Praha) is the largest testing and certification organization in the Czech Republic specializing in conformity assessment of construction products. The organization provides a broad range of services including product certification, management system certification, testing, building certification, inspection, metrology, and technical consultancy. The website targets construction industry professionals, manufacturers, importers, and investors, positioning itself as a leading national authority in its sector. The website infrastructure utilizes Bootstrap 3.3.7, jQuery 1.11.3, and Google reCAPTCHA v2 for form security. The site is mobile optimized with a clear navigation structure and cookie consent mechanisms that comply with GDPR requirements. However, some technologies are dated, and security headers are not evident, suggesting room for technical modernization and enhanced security hardening. Security posture is strong with HTTPS enforced, CSRF protection, and reCAPTCHA integration, but lacks published security policies and incident response contacts. The absence of WHOIS data reduces domain trustworthiness, though the professional presentation and content quality support legitimacy. No vulnerabilities or exposed sensitive data were detected. Overall, the website is professional, secure, and compliant with privacy regulations, but improvements in transparency (privacy policy, security policy) and technical updates are recommended to enhance trust and security maturity.

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 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: Google APIs

      What to do: Document all third-party data sharing in your privacy policy

  2. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

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Keep watching tzus.cz

This scan found 21 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
85
Security headers
40
Email security
85
DNS health
75
Network security
100
GDPR outside view
25
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

TZÚS Praha operates as a government-affiliated entity providing essential testing and certification services within the construction sector. Its market position as the largest organization in its field in the Czech Republic gives it a competitive advantage and authoritative status. The business model is service-oriented, focusing on compliance, quality assurance, and technical consultancy. Revenue streams likely derive from certification fees, testing services, and consultancy contracts. The target customers include manufacturers, importers, investors, and construction professionals. The website's multilingual support indicates an intent to serve both domestic and international clients. Partnerships with web development firms are evident, but no direct commercial partnerships or subsidiaries were identified. The organization's archival by the National Library of the Czech Republic underscores its established presence and importance.

Security posture

The website demonstrates a mature security posture with HTTPS enforced, CSRF tokens on forms, and Google reCAPTCHA protecting user inputs. Cookie consent is granular and GDPR compliant, reflecting good privacy practices. However, the absence of explicit security policies, incident response contacts, and security headers such as Content-Security-Policy or X-Frame-Options indicates areas for improvement. The use of older JavaScript libraries like jQuery 1.11.3 may expose the site to known vulnerabilities if not regularly patched. No signs of exposed sensitive data or vulnerabilities were found. Overall, the security posture is good but could be enhanced by publishing security documentation and updating technical components.

Recommendations

  1. Publish a comprehensive privacy policy and security policy on the website to improve transparency and compliance.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection against common web attacks.
  3. Update JavaScript libraries, especially jQuery, to the latest secure versions to mitigate known vulnerabilities.
  4. Provide clear incident response contact information (e.g., security@ or abuse@ email) to facilitate vulnerability reporting and incident management.
  5. Regularly audit and monitor website security posture and cookie consent mechanisms to maintain GDPR compliance and user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Technický a zkušební ústav stavební Praha, s.p.
Description
TZÚS Praha, s.p. is the largest testing and certification organization in the Czech Republic in the field of conformity assessment of construction products.
Key services
Product certification, Management system certification, Testing, Building certification, Inspection, Metrology, Technical consultancy
Content quality
good
Branding
consistent

Technology

Stack
Bootstrap 3.3.7, jQuery 1.11.3, Google reCAPTCHA v2, Mamoto analytics
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CSRF token in forms
  • Google reCAPTCHA on newsletter form
  • Cookie consent with granular control

Analytics and tracking

Services
Google Analytics (via _ga, _gid, _gat cookies), Mamoto
Tracking level
moderate
Privacy practices
good

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 no blocking or WAF detected.
  2. Content is professional, government-related, and in Czech language with multilingual options.
  3. Cookie consent is implemented with detailed categories and user control.
  4. No explicit privacy policy or terms of service pages found in the provided content.
  5. Contact information is clearly presented with company email and phone number.
  6. Use of Google reCAPTCHA and CSRF tokens indicates attention to form security.
  7. WHOIS data is missing, which is unusual and reduces domain trust score.
  8. No social media links detected in the provided content.
  9. Website uses older versions of jQuery and Bootstrap but remains functional.
  10. No security headers detected in HTML content; recommend adding for improved security.
Technical notes

Notes

The website is built on a classic web stack using Bootstrap 3.3.7 and jQuery 1.11.3, which are functional but somewhat outdated technologies. Google reCAPTCHA v2 is implemented for form security. The site loads external resources from trusted CDNs such as maxcdn.bootstrapcdn.com and ajax.googleapis.com. Performance is moderate with no evident blocking or WAF interference. Mobile optimization is good with responsive design elements. SEO is supported by proper meta tags and structured navigation. However, the absence of modern frameworks or CMS detection suggests a custom or legacy platform. Technical debt is present due to older libraries, and modernization could improve security and maintainability.
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

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