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Security report for slezskoostravskyhrad.cz

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

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

62/100

Risk levelMedium

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

Slezskoostravský hrad is a cultural and historical site managed by Černá louka s.r.o., offering exhibitions, guided tours, and event hosting primarily targeting tourists and local visitors interested in regional heritage. The website is well-structured with good content quality and consistent branding, supported by regional partners and social media presence. Technically, the site uses legacy jQuery and standard web technologies with Google Analytics for visitor tracking. Security posture is adequate with HTTPS and cookie consent mechanisms, but lacks advanced security headers and updated libraries. WHOIS data is missing, which reduces domain trustworthiness, though the business information on the site appears legitimate and consistent. Overall, the site is a reliable regional cultural resource with room for technical and security improvements.

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

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 slezskoostravskyhrad.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
77
Security headers
20
Email security
62
DNS health
85
Network security
100
GDPR outside view
25
Average
62

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 company operates in the hospitality and cultural heritage sector, focusing on managing a historic castle and hosting cultural events. Its market position is regional with strong partnerships from local government and cultural organizations. The business model revolves around tourism, education, and event rentals. The website supports multiple languages and social media channels, indicating a strategy to attract diverse visitors. Growth potential lies in expanding event offerings and enhancing digital engagement. The absence of WHOIS data is a minor concern but does not detract from the visible business legitimacy.

Security posture

The website enforces HTTPS and implements a cookie consent banner with opt-in for analytics cookies, demonstrating GDPR compliance. However, the use of an outdated jQuery version and absence of key security headers such as Content-Security-Policy and X-Frame-Options present moderate risks. No incident response or vulnerability disclosure information is provided, limiting transparency. No exposed sensitive data or forms with security issues were detected. Overall, the security posture is moderate but could be improved by updating libraries, adding security headers, and publishing security policies.

Recommendations

  1. Update jQuery and other JavaScript libraries to latest secure versions.
  2. Implement security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a security.txt file and provide clear incident response contact information.
  4. Add explicit contact emails and phone numbers for business and support.
  5. Enhance accessibility features to improve compliance and user experience.

Contact details published on the site

Addresses
Legal name
Černá louka s.r.o.
VAT number
CZ26879280
Registration number
oddíl C, vložka 41134 (Krajský soud v Ostravě)
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Černá louka s.r.o.
Description
Slezskoostravský hrad is a historic castle in Ostrava, Czech Republic, partially preserved and restored, serving as a cultural and historical site with exhibitions, guided tours, and events.
Key services
Exhibitions, Guided tours, Cultural and social events, Venue rental for weddings
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.11.3, Google Analytics, Slick Carousel, Fancybox
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in for analytics cookies
  • No exposed sensitive data in HTML

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 about Slezskoostravský hrad.
  2. No WHOIS data available, which is unusual and reduces domain trust.
  3. Cookie consent and privacy policy are implemented, indicating GDPR awareness.
  4. No contact emails or phone numbers explicitly found in HTML content.
  5. Social media presence is strong with Facebook, Instagram, and YouTube links.
  6. Website uses older jQuery version which may pose security risks.
  7. No visible security headers detected in provided data.
  8. No forms detected in the HTML content provided.
  9. Partner logos and links indicate strong regional and cultural partnerships.
Technical notes

Notes

The website uses jQuery 1.11.3, Google Analytics via gtag.js, Slick Carousel, and Fancybox for UI components. The HTML is well-structured with proper meta tags and Open Graph data for social sharing. The site is mobile responsive and uses CSS for styling with fallback for older browsers. Performance is moderate, with potential improvements by updating libraries and optimizing assets. No CMS or hosting provider information is evident. The cookie consent mechanism is implemented with detailed cookie categories. Overall, the technical infrastructure is functional but could benefit from modernization and enhanced security practices.
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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