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Security report for lektortance.cz

Education · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

52/100

Risk levelMedium

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

The website www.lektortance.cz offers a specialized educational service focused on a requalification course for dance instructors accredited by the Czech Ministry of Education (MŠMT ČR). It targets amateur dancers with at least three years of experience and existing dance trainers seeking professional certification. The site provides detailed course information, schedules, pricing, and testimonials, positioning itself as a reputable provider in the Czech education sector for dance training. Technically, the website employs modern frontend technologies including Bootstrap 5, jQuery, and Lightbox, ensuring a responsive and user-friendly experience. The site is well-structured with clear navigation and good content quality. However, there is a lack of explicit privacy and cookie policies, which impacts compliance with GDPR and related regulations. No advanced analytics or tracking scripts were detected, indicating minimal user tracking. From a security perspective, the site uses HTTPS (implied by the URL), but no security headers were detected in the provided data, suggesting room for improvement in security hardening. The absence of WHOIS data limits the ability to fully verify domain legitimacy, though the detailed alumni records and accreditation provide strong trust signals. Overall, the website is professional, content-rich, and trustworthy for its educational purpose but should enhance privacy compliance and security practices to improve its risk profile and regulatory adherence.

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

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 Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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 lektortance.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.

Daily monitoring

Recommended

€25per month

  • 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
72
Security headers
30
Email security
85
DNS health
75
Network security
40
GDPR outside view
10
Average
52

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention lektortance.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for lektortance.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

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 niche education sector, specifically offering accredited dance instructor requalification courses in the Czech Republic. Its competitive advantage lies in official accreditation by MŠMT ČR and a team of experienced professional instructors. The business model is based on paid courses with a clear curriculum, practical training, and certification. The detailed alumni lists from multiple years indicate sustained operations and a growing customer base. The target customers are amateur and professional dancers seeking formal qualification. The absence of partner or subsidiary domains suggests a focused standalone operation. The website's comprehensive content and testimonials support a strong market position within its niche.

Security posture

The current security posture is moderate. The site uses HTTPS, which is mandatory for secure communication. However, the lack of visible security headers (such as Content-Security-Policy, X-Frame-Options, HSTS) reduces protection against common web attacks. No vulnerabilities or exposed sensitive data were found in the HTML content. The absence of privacy and cookie policies indicates compliance gaps with GDPR. There is no evidence of incident response or vulnerability disclosure mechanisms. The minimal use of tracking and absence of third-party analytics reduce privacy risks but also limit insights into user behavior. Overall, the site would benefit from implementing security best practices and formal privacy documentation.

Recommendations

  1. Implement comprehensive privacy and cookie policies to ensure GDPR compliance.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and HSTS to enhance protection.
  3. Establish a vulnerability disclosure policy and incident response contact information.
  4. Regularly update all JavaScript libraries and dependencies to mitigate vulnerabilities.
  5. Consider adding analytics with privacy-respecting configurations to improve user insights while maintaining compliance.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
Rekvalifikační kurz s akreditací MŠMT ČR, poskytující odborné vzdělání a osvědčení pro trenéry tanečních technik.
Key services
rekvalifikační kurz Lektor Tance, výukové víkendy, praktická praxe v Centru Tance, výukové materiály, zkoušky a osvědčení
Content quality
excellent
Branding
consistent

Technology

Stack
Bootstrap 5.3.5, jQuery 3.7.1, jQuery UI 1.13.3, Lightbox, Nette Forms, Naja.js
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS usage assumed (based on URL)
  • No exposed sensitive data in HTML
  • Use of modern JS libraries

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with rich content about a dance instructor qualification course.
  2. No privacy or cookie policy found, which is a compliance gap.
  3. Contact information is clearly provided including email, phone, and contact form.
  4. No security headers detected in provided data; security posture can be improved.
  5. WHOIS data is unavailable, limiting domain trust analysis.
  6. No analytics or tracking scripts detected, indicating minimal user tracking.
  7. Website uses modern frontend technologies and is mobile responsive.
  8. No advertising or affiliate marketing detected.
  9. Content is safe and suitable for general audiences.
Technical notes

Notes

The website is built using a modern frontend stack with Bootstrap 5.3.5, jQuery 3.7.1, jQuery UI, Lightbox, and Nette Forms for form handling. The site is mobile responsive and well-structured with smooth scrolling and tabbed content. Performance is moderate, with external dependencies loaded from reputable CDNs. No CMS or backend platform was identified from the HTML content. Hosting provider details are not available. Accessibility features are basic but present. SEO optimization is good with proper meta tags and structured data (JSON-LD) describing the course product. The site lacks advanced security headers and privacy mechanisms, which are areas for technical improvement.
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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