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Security report for kellnerfoundation.cz

The Kellner Family Foundation · Education · Czech Republic

Low risk. 4 critical or high findings in GDPR outside view and SSL/TLS.

Security score

79/100

Risk levelLow

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

The Kellner Family Foundation is a Czech Republic-based non-profit organization founded in 2009, focused on supporting long-term educational projects for primary, secondary, and university students as well as teachers. The foundation positions itself as a key supporter of education in the region, leveraging its family legacy and resources to impact the educational sector positively. The website reflects a professional and consistent brand image, targeting educational institutions and students as its primary audience. Technically, the website is built using modern web technologies including React and Next.js, with content managed via DatoCMS. It employs Google Tag Manager for analytics and OneTrust for cookie consent management, indicating a mature digital infrastructure. The site is mobile-optimized, accessible, and SEO-friendly, providing a good user experience. From a security perspective, the site enforces HTTPS and includes standard security headers, demonstrating good security hygiene. Privacy and cookie policies are comprehensive and GDPR compliant, though explicit security policies and incident response contacts are not published. The absence of WHOIS data limits domain trust analysis, but the website content and social media presence support its legitimacy. Overall, the foundation's website is well-constructed and secure, with room for improvement in transparency around security policies and domain registration details. Strategic recommendations include publishing a security policy, incident response information, and verifying domain registration data to enhance trust and compliance.

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

4 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, LinkedIn, YouTube, Google APIs

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

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

Need hands-on remediation? Email guard@offseq.com

Keep watching kellnerfoundation.cz

This scan found 16 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
90
Email security
85
DNS health
85
Network security
100
GDPR outside view
40
Average
79

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 Kellner Family Foundation operates as a non-profit entity in the education sector, focusing on funding and supporting educational projects across multiple levels of schooling. Its market positioning leverages the Kellner family name and legacy, providing a competitive advantage in attracting partnerships and funding opportunities. The foundation's business model centers on philanthropy and educational support rather than commercial revenue streams. Target customers include schools, teachers, and students in the Czech Republic. The foundation maintains a moderate size and a clear mission, with a partnership ecosystem that includes social media engagement and educational institutions. Growth indicators are tied to project funding and educational impact rather than commercial metrics.

Security posture

The website demonstrates a solid security posture with HTTPS enforcement and multiple security headers such as Strict-Transport-Security, X-Content-Type-Options, and Content-Security-Policy. The use of OneTrust for cookie consent indicates compliance with privacy regulations. No vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of a published security policy and incident response contacts represents a compliance gap. There is no evidence of a vulnerability disclosure program or security.txt file, which could improve transparency and security culture. Overall, the security maturity is good but could be enhanced by formalizing security governance documentation and incident response readiness.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and controls.
  2. Provide clear incident response contact information to facilitate reporting and response.
  3. Implement and publicize a vulnerability disclosure policy or security.txt file.
  4. Verify and publish domain WHOIS registration details to improve trustworthiness.
  5. Enhance transparency around data retention and privacy practices beyond cookie consent.

Contact details published on the site

Addresses
Legal name
The Kellner Family Foundation
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
The Kellner Family Foundation
Description
The Renáta and Petr Kellner family foundation was founded in 2009 with the aim of supporting primarily long-term educational projects intended for primary school pupils and their teachers, secondary school students and university students.
Key services
Educational project funding, Support for schools and students
Content quality
good
Branding
consistent

Technology

Stack
React, Next.js, Google Fonts, Google Tag Manager, OneTrust Cookie Consent
Frameworks
Next.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. WHOIS data is missing or unavailable, limiting domain trust analysis.
  3. Site uses modern web technologies and good security practices.
  4. Privacy and cookie policies are present and GDPR compliant.
  5. No contact phone numbers or physical addresses explicitly found in provided content.
  6. Social media presence includes Facebook link.
  7. No terms of service or security policy pages explicitly found.
  8. No vulnerability disclosure or incident response information available.
Technical notes

Notes

The website is built on a modern React and Next.js framework, leveraging server-side rendering for performance and SEO benefits. Content management is handled via DatoCMS, enabling flexible content updates. External resources include Google Fonts and Google Tag Manager, supporting design and analytics needs. The site is mobile-optimized and accessible, with good SEO metadata and Open Graph tags for social sharing. Performance is moderate, with potential improvements in hosting provider transparency and optimization. No deprecated or vulnerable libraries were detected. Technical risks are minimal but include reliance on third-party services and lack of explicit hosting information.
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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