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Security report for cerna-louka.cz

Černá louka s.r.o. · Hospitality · Czech Republic

Medium risk. 8 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

Černá louka s.r.o. operates a prominent exhibition and event venue located in Ostrava, Czech Republic. The company offers rental spaces for exhibitions, conferences, seminars, and corporate events, positioning itself as a key player in the regional hospitality and event hosting market. The website reflects a professional business with clear branding, a calendar of upcoming events, and partnerships with local organizations and media outlets. The company was founded in 2006 and maintains a medium-sized business profile. Technically, the website employs modern frontend technologies including Bootstrap and jQuery, integrates Google Analytics and Google Tag Manager for visitor tracking, and implements a cookie consent mechanism compliant with GDPR. The site is mobile-optimized and provides a good user experience with clear navigation and relevant content. However, no CMS or hosting provider information is explicitly detected. From a security perspective, the site uses HTTPS and has a cookie consent banner with opt-in for analytics cookies, indicating awareness of privacy regulations. There is no evidence of advanced security headers or a published security policy. The absence of WHOIS data for the domain reduces trustworthiness, although the website displays legitimate company registration details. No critical vulnerabilities or adult content were detected, and the site appears safe for general audiences. Overall, the website demonstrates a solid business presence with good technical implementation and privacy compliance. To enhance security posture and trust, it is recommended to publish security policies, implement security headers, and ensure WHOIS data availability. The business should also consider adding explicit contact emails and phone numbers to improve credibility and user trust.

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

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 cerna-louka.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
67
Security headers
20
Email security
70
DNS health
80
Network security
100
GDPR outside view
25
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

Černá louka s.r.o. holds a strong market position as a traditional and significant exhibition venue in Ostrava and the wider Czech Republic. Its business model centers on venue rental and event hosting, targeting event organizers, exhibitors, and the general public. The company leverages partnerships with local media, municipal entities, and cultural organizations to enhance its visibility and service offerings. The presence of a detailed event calendar and multiple partner logos indicates active engagement with the community and stakeholders. The company’s revenue streams likely derive from space rental fees, event services, and possibly sponsorships. The website content and structure support a medium-sized enterprise with a focus on hospitality and event management sectors.

Security posture

The website demonstrates a moderate security maturity level. HTTPS is enforced, and a cookie consent mechanism is implemented to comply with GDPR requirements. However, the absence of visible HTTP security headers such as Content Security Policy, HSTS, or X-Frame-Options suggests room for improvement. No security.txt or vulnerability disclosure policy is found, limiting transparency for security researchers. The lack of explicit contact emails or phone numbers may hinder incident response communication. No exposed sensitive data or vulnerable libraries were detected in the provided content. Overall, the security posture is adequate for a medium-sized business but would benefit from enhanced security controls and documented policies.

Recommendations

  1. Implement and configure HTTP security headers including CSP, HSTS, and X-Frame-Options to strengthen protection against common web attacks.
  2. Publish a dedicated security policy and vulnerability disclosure program (e.g., security.txt) to improve transparency and incident response readiness.
  3. Ensure WHOIS domain registration data is complete and publicly available to enhance domain trustworthiness.
  4. Add explicit company contact emails and phone numbers on the website to facilitate user communication and support.
  5. Conduct regular security audits of third-party scripts and update dependencies to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
Černá louka s.r.o.
VAT number
CZ26879280
Registration number
26879280
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Černá louka s.r.o.
Description
Černá louka is a traditional venue for exhibitions and expositions in Ostrava, recognized as one of the most significant fair locations in the Czech Republic.
Key services
Event space rental, Exhibition hosting, Conference and seminar facilities
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Bootstrap, Google Tag Manager, Google Analytics, CookieConsent.js
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • Use of HTTPS (implied by base href https://)
  • Cookie consent with opt-in for analytics cookies

Analytics and tracking

Services
Google Analytics
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 rich content and multiple sections.
  2. No WHOIS data available, which is unusual and reduces domain trust.
  3. Cookie consent mechanism is implemented with opt-in for analytics cookies.
  4. No explicit security headers detected in provided data.
  5. Multiple partner and social media links indicate active business presence.
  6. No contact emails or phone numbers explicitly found in HTML content.
  7. Company registration details are clearly displayed in footer.
  8. No signs of adult or malicious content.
  9. Website uses modern frontend libraries and Google Analytics for tracking.
Technical notes

Notes

The website uses a modern frontend stack with Bootstrap for responsive design and jQuery for DOM manipulation. Google Tag Manager and Google Analytics are integrated for tracking and analytics. The site includes a cookie consent mechanism implemented via cookieconsent.js, supporting GDPR compliance. Performance appears moderate with optimized images and structured content. Mobile optimization is good, with responsive layouts and accessible navigation. Accessibility features are basic but could be improved. No CMS or backend platform is explicitly detected. Hosting provider details are not available from the provided data. Overall, the technical infrastructure supports a professional and user-friendly website but could benefit from enhanced security and accessibility 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

Earlier scans of this domain

  1. 60/100Medium35 findingsView report
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