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Security report for duhovkagroup.cz

DUHOVKA GROUP, a.s. · Education · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

55/100

Risk levelMedium

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

Duhovka Group is a well-established Czech private educational organization founded in 2008, offering a comprehensive bilingual Montessori education system in Prague. Their services span from nurseries and kindergartens to elementary schools, an eight-year gymnasium, and a Montessori institute for teacher training. The website reflects a professional and consistent brand image with clear communication of their educational philosophy and offerings. Technically, the site employs modern web technologies including jQuery, Google Tag Manager, and cookie consent mechanisms, ensuring a good user experience and compliance with GDPR regulations. Security posture is moderate with HTTPS usage and cookie consent but lacks explicit security headers and detailed security policies. The absence of WHOIS data reduces domain transparency and trustworthiness, though the business presence and content quality mitigate this concern. Overall, the site is well-positioned in the education sector with strong digital maturity but could improve security and domain registration transparency.

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

6 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

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, Google APIs

      What to do: Document all third-party data sharing in your privacy policy

  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 duhovkagroup.cz

This scan found 22 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
72
Security headers
35
Email security
70
DNS health
75
Network security
40
GDPR outside view
40
Average
55

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

Duhovka Group occupies a strong niche in the Prague private education market, leveraging Montessori methodology and bilingual education to attract families seeking quality early childhood and secondary education. Their business model integrates multiple educational institutions under one brand, enhancing cross-institutional continuity and brand loyalty. The presence of a dedicated teacher training institute supports quality assurance and staff development. Their digital ecosystem includes multiple related domains for each institution and a career portal, indicating organizational maturity and growth orientation. The company targets families with children aged 2 to 19 years and positions itself as a premium educational provider. Partnerships and social media presence further reinforce their market position. Revenue streams likely derive from tuition fees and training programs. The company demonstrates consistent branding and professional content, supporting credibility and trust.

Security posture

The website demonstrates a baseline security posture with HTTPS enabled and a robust cookie consent mechanism aligned with GDPR requirements. However, the lack of visible HTTP security headers such as Content Security Policy, HSTS, and X-Frame-Options suggests room for improvement in mitigating common web vulnerabilities. No forms were detected on the analyzed page, reducing immediate risk of input-based attacks. The use of third-party scripts like Google Tag Manager and Analytics is standard but requires ongoing monitoring for vulnerabilities. The absence of a published security policy or incident response contact limits transparency and preparedness communication. The missing WHOIS data is a notable concern for domain legitimacy and trust. Overall, the security posture is moderate but would benefit from enhanced header configurations, explicit security policies, and domain registration transparency.

Recommendations

  1. Implement comprehensive HTTP security headers including CSP, HSTS, and X-Frame-Options to strengthen web security.
  2. Publish a clear security policy and incident response contact information to improve transparency and readiness.
  3. Conduct regular audits of third-party scripts and dependencies to identify and mitigate vulnerabilities.
  4. Investigate and resolve the missing WHOIS data to enhance domain registration transparency and trust.
  5. Enhance accessibility features and perform periodic security training for staff to foster a strong security culture.

Contact details published on the site

Addresses
Legal name
DUHOVKA GROUP, a.s.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
DUHOVKA GROUP, a.s.
Description
Duhovka Group je česko-anglický montessori vzdělávací systém v Praze zahrnující jesle, mateřskou školku, základní školu, osmileté gymnázium a montessori institut pro učitele. Poskytuje vzdělávání dětí od 2 do 19 let založené na montessori metodě v bilingvním prostředí.
Key services
Jesle a mateřská škola, Základní škola, Osmileté gymnázium, Montessori institut pro učitele
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery, Google Tag Manager, Google Analytics, CookieConsent.js, Bootstrap (implied by navbar classes), Google Fonts
Frameworks
Bootstrap (implied)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of HTTPS (implied by URL https://)

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
good

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.
  2. No WAF or blocking mechanisms detected.
  3. Strong GDPR and cookie compliance with user consent mechanisms.
  4. Clear and consistent branding and business information.
  5. WHOIS data unavailable, which is a concern for domain transparency.
  6. No explicit security headers detected in HTML source.
  7. Use of modern web technologies and analytics tools.
  8. No forms detected on the analyzed page.
  9. Multiple external links to related educational institutions and social media.
Technical notes

Notes

The website uses a modern and common technology stack including jQuery, Google Tag Manager, Google Analytics, and cookie consent scripts. The presence of Google Fonts and Bootstrap-like classes indicates a responsive and visually consistent design. Performance is moderate with asynchronous loading of analytics scripts and preconnect hints for fonts. The site is mobile optimized with responsive navigation and accessible cookie consent UI. SEO is supported by appropriate meta tags and structured navigation. No CMS was explicitly detected, suggesting a custom or proprietary platform. Hosting provider details are not discernible from the content. The site lacks explicit security headers, which is a technical debt and security risk. Overall, the technical implementation is solid but could be improved with enhanced security configurations and performance optimizations.
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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