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Security report for semafor.cz

Divadlo Semafor · Hospitality · Czech Republic

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

Security score

50/100

Risk levelMedium

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

Divadlo Semafor is a culturally significant theatre company based in the Czech Republic, offering a variety of theatrical performances and cultural events. The website provides comprehensive information about upcoming shows, ticket purchasing options, and company history, targeting Czech-speaking audiences interested in theatre and culture. The business model centers on live entertainment and ticket sales, supported by an e-shop and newsletter subscription for audience engagement. Technically, the website employs modern frontend technologies such as Bootstrap and jQuery, ensuring a responsive and user-friendly experience. However, some areas such as SEO and accessibility could be improved. Security posture is moderate with HTTPS enabled and cookie consent implemented, but lacks advanced security headers and published privacy or security policies. The absence of WHOIS data reduces domain trustworthiness, though the website content and contact information appear legitimate. Strategic improvements in privacy compliance, security headers, and WHOIS transparency would enhance overall trust and security.

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

    • 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

  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 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 semafor.cz

This scan found 24 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
35
Email security
85
DNS health
75
Network security
20
GDPR outside view
25
Average
50

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 theatre holds a strong position in the Czech cultural sector with a long history dating back to 1959. Its competitive advantage lies in its established brand and diversified offerings including live performances, ticketing, and merchandise sales. Revenue streams are primarily from ticket sales and e-shop purchases. The target customer segment is local and regional theatre-goers and cultural enthusiasts. Partnerships with ticketing platforms and local government entities support its operations. Growth indicators include active event scheduling and digital engagement via newsletters. The company maintains a professional online presence but could benefit from enhanced transparency and compliance documentation.

Security posture

The website demonstrates a basic to moderate security maturity level. HTTPS is enforced, and cookie consent mechanisms are in place, indicating awareness of privacy regulations. However, the lack of security headers such as Content Security Policy, HSTS, and X-Frame-Options represents a gap in defense-in-depth. No incident response or vulnerability disclosure information is published, limiting transparency and preparedness. Forms are present but no explicit security measures (e.g., CAPTCHA, CSRF tokens) are visible in the HTML. The missing WHOIS data is a concern for domain legitimacy verification. Overall, the security posture is adequate for a cultural website but requires improvements to meet higher compliance and security standards.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service to improve legal compliance and user trust.
  2. Implement and configure security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  3. Establish a security.txt file and incident response contact information to facilitate vulnerability reporting and improve transparency.
  4. Improve accessibility features to comply with standards and enhance user experience for all visitors.
  5. Investigate and resolve the missing WHOIS data issue to strengthen domain legitimacy and trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Divadlo Semafor
Description
Divadlo Semafor is a theatre company offering theatrical performances, events, and cultural programming primarily in Czech language. It provides ticket sales, information about repertoire, actors, guests, and theatre history.
Key services
Theatrical performances, Ticket sales, Cultural events, Newsletter subscription
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Bootstrap, Bootstrap-select, Lightbox, Headroom.js, Masonry, Google Fonts (Roboto)
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Ad networks
Google AdSense
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 theatre performances and events.
  2. No privacy policy or terms of service pages found.
  3. Cookie consent banner present and functional.
  4. Contact information is clearly provided with emails and phone numbers.
  5. No security.txt or incident response info found.
  6. WHOIS data unavailable, which is unusual and reduces domain trust score.
  7. Website uses modern frontend technologies and is mobile responsive.
  8. No adult or questionable content detected.
  9. External links mostly to related theatre ticketing and cultural sites.
Technical notes

Notes

The website uses a modern frontend stack with Bootstrap for responsive design, jQuery for DOM manipulation, and additional libraries like Lightbox and Masonry for UI enhancements. Google Fonts are used for typography. The site loads scripts asynchronously and includes a cookie consent banner. Performance is moderate with no obvious blocking scripts. SEO is basic with meta tags present but no Open Graph or JSON-LD structured data detected. No CMS is explicitly identified. Hosting provider details are not disclosed. The site is mobile optimized and navigation is clear and consistent. Technical debt appears low but improvements in SEO and accessibility are recommended.
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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