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Security report for vzlu.cz

VZLU AEROSPACE · Transportation · Czech Republic

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

60/100

Risk levelMedium

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

VZLU AEROSPACE is the national aerospace research center of the Czech Republic, focusing on aviation and space technology development. The website presents a professional and well-structured digital presence using WordPress with the Divi theme and Yoast SEO for optimization. The technical infrastructure includes standard analytics tools such as Google Analytics and Google Tag Manager, indicating a moderate level of digital maturity. Security posture is basic with HTTPS enabled but lacks advanced security headers and visible security policies. The absence of WHOIS data limits the ability to fully verify domain legitimacy, which slightly impacts trustworthiness. Overall, the website serves its purpose effectively but would benefit from enhanced privacy compliance and security measures.

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

9 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

  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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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';…

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

Keep watching vzlu.cz

This scan found 25 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
62
Security headers
15
Email security
85
DNS health
85
Network security
100
GDPR outside view
10
Average
60

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 organization operates primarily in the transportation and government sectors, providing aerospace research and development services. Its market position is that of a national leader in aerospace technology within the Czech Republic. The business model is likely government-funded research with possible consulting services. The target audience includes industry professionals and government stakeholders. The website's content and structure support a medium-sized entity with consistent branding and good content quality. There is no evidence of commercial sales or e-commerce activities. The partnership ecosystem is not explicitly detailed, and no related domains or subsidiaries were identified from the data.

Security posture

The website employs HTTPS, which is mandatory for secure communications. However, the lack of security headers such as Content-Security-Policy, X-Frame-Options, and others suggests room for improvement in defense-in-depth strategies. No exposed sensitive data or vulnerable libraries were detected in the provided content. The absence of a vulnerability disclosure policy or security.txt file indicates limited transparency in security incident handling. Privacy compliance is minimal, with no visible cookie consent mechanisms or privacy policies, which could pose compliance risks under GDPR or similar regulations. Incident response contact channels are not provided, reducing readiness for security events.

Recommendations

  1. Implement comprehensive privacy and cookie policies with clear GDPR compliance statements.
  2. Add security headers to enhance protection against common web vulnerabilities.
  3. Publish a vulnerability disclosure policy and security.txt file to improve transparency and incident response.
  4. Enhance contact information visibility, including security and data protection officer contacts.
  5. Regularly audit and update all software components to mitigate vulnerabilities and maintain security posture.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
VZLU AEROSPACE
Description
VZLU AEROSPACE is the national center for aviation and space in the Czech Republic, focusing on aerospace research and development.
Key services
Aerospace research, Development and testing, Consulting in aviation and space
Content quality
good
Branding
consistent

Technology

Stack
Google Analytics, Google Tag Manager, Yoast SEO, Divi Theme, WordPress
Frameworks
Yoast SEO
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
60/100
Good practices seen
  • HTTPS enabled

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is accessible and not blocked by WAF or security mechanisms.
  2. WHOIS data is missing or unavailable, limiting domain trust assessment.
  3. Website uses WordPress with Divi theme and Yoast SEO plugin.
  4. Google Analytics and Google Tag Manager are used for tracking.
  5. No explicit privacy, cookie, or terms of service policies found in the provided content.
  6. No contact emails or phone numbers explicitly found in the provided HTML snippet.
  7. Content is professional and focused on aerospace research and government services.
  8. No adult or questionable content detected.
  9. Security headers and advanced security policies are not evident from the provided data.
Technical notes

Notes

The website is built on WordPress using the Divi theme, a popular and flexible CMS platform. It leverages Yoast SEO for search engine optimization and Google Analytics for visitor tracking. The site loads external fonts from Google Fonts and uses Google Tag Manager for marketing and analytics management. Performance appears moderate with no explicit indicators of slow loading, but no advanced performance optimizations were detected. Mobile optimization is good, with responsive design elements evident. Accessibility features are basic, with room for improvement to meet higher standards. The technical stack is modern but could benefit from enhanced security and privacy features.
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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