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Security report for zamek-trest.cz

Středisko společných činností AV ČR, v. v. i. · Hospitality · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

53/100

Risk levelMedium

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

Zámek Třešť is a historic castle hotel and conference center operated under the auspices of the Czech Academy of Sciences. The website presents a well-structured hospitality business offering accommodation, dining, wellness, weddings, conferences, and an e-commerce shop. The business targets tourists, corporate clients, and wellness seekers, positioning itself as a niche cultural and historic venue with institutional backing. Technically, the site uses a modern CMS (OpenCms) and integrates popular JavaScript libraries and analytics tools, with good mobile optimization and user experience. Security posture is moderate with cookie consent and privacy policies implemented, but lacks visible advanced security headers. WHOIS data is unavailable, which slightly reduces trust but the institutional affiliation and professional presentation mitigate concerns. Overall, the site is professional, compliant with GDPR, and trustworthy for its audience.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

8 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 zamek-trest.cz

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  • TLS certificates and expiry
  • DNS records
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  • 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
35
DNS health
65
Network security
100
GDPR outside view
40
Average
53

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 operates in the hospitality sector with a focus on cultural tourism and event hosting. Its affiliation with the Czech Academy of Sciences provides a competitive advantage and trust signal. Revenue streams include accommodation bookings, restaurant services, conference hosting, wellness programs, weddings, and product sales via an e-shop. The website supports multiple languages and integrates booking systems, indicating a mature digital presence. Partnerships with other hospitality and cultural organizations expand its ecosystem. The target market includes domestic and international tourists, corporate clients, and wellness customers. Growth potential lies in expanding wellness offerings and e-commerce. The business maintains a consistent brand and leverages social media for engagement.

Security posture

The website demonstrates a baseline security posture with HTTPS usage and cookie consent mechanisms aligned with GDPR. However, no explicit HTTP security headers were detected in the provided data, which could improve protection against common web attacks. The use of third-party analytics and marketing scripts is managed with user consent. No forms collecting sensitive data are directly visible except for booking integrations, which appear to be handled by trusted external providers. The absence of WHOIS data is a minor concern but does not indicate malicious intent given the institutional context. Recommendations include implementing security headers, regular vulnerability assessments, and ensuring third-party integrations are secure and up to date.

Recommendations

  1. Implement HTTP security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  2. Conduct periodic security audits of third-party booking and e-commerce integrations.
  3. Enhance accessibility features to meet WCAG standards.
  4. Maintain up-to-date privacy and cookie policies reflecting evolving regulations.
  5. Verify and publish WHOIS domain registration details to improve trust.

Contact details published on the site

Addresses
Legal name
Středisko společných činností AV ČR, v. v. i.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Středisko společných činností AV ČR, v. v. i.
Description
Zámek Třešť is a historic castle hotel and conference center offering accommodation, dining, wellness, weddings, and event services. It is associated with the Czech Academy of Sciences and features cultural and recreational activities.
Key services
Accommodation, Restaurant, Conference facilities, Weddings, Wellness center, E-shop
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.5.0, Bootstrap, Font Awesome 4.6.3, slick-carousel, slick-lightbox, Plausible Analytics, Google Analytics, Profitroom Booking system
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • Cookie consent banner with detailed categories
  • Use of HTTPS (implied by external scripts and URLs)
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Plausible Analytics, Seznam Sklik
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Plausible Analytics, Sklik (Seznam.cz conversion tracking)
Marketing tools
Plausible Analytics, Sklik conversion tracking
Transparency
good

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 content and images
  2. No WHOIS data available, indicating possible privacy protection or unregistered domain
  3. Cookie consent and privacy policies are implemented and GDPR compliant
  4. Multiple external analytics and marketing scripts are used with consent mechanisms
  5. Business is linked to Czech Academy of Sciences, enhancing trust
  6. No security headers detected in provided data; potential improvement area
  7. No visible forms collecting personal data except booking system integrated via external scripts
  8. Social media presence on Facebook and Instagram is active
  9. Website uses OpenCms CMS and modern JS libraries
  10. No suspicious or malicious content detected
Technical notes

Notes

The website is built on OpenCms, a Java-based CMS, and uses modern front-end libraries including jQuery, Bootstrap, Font Awesome, and slick-carousel for UI components. Analytics are handled via Google Analytics, Plausible, and Seznam Sklik conversion tracking, all integrated with consent management. The site loads multiple CSS and JS resources efficiently and supports responsive design for mobile devices. Booking functionality is integrated via Profitroom and Upperbooking services. Performance is moderate with room for optimization. No major technical debt or deprecated technologies were detected. The site could benefit from enhanced security headers and accessibility improvements.
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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