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Security report for terezanet.cz

TEREZA, vzdělávací centrum, z. ú. · Education · 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

TEREZA, vzdělávací centrum, z. ú. is a Czech educational organization focused on connecting children, educators, and nature through verified educational programs with real impact. Established in 2003, it operates as a small non-profit entity with a strong presence in the education sector. The website reflects a professional and consistent brand image, targeting educators and children interested in sustainable education. Technically, the site is built on WordPress using the Divi theme and integrates modern SEO and analytics tools such as Rank Math and Google Analytics. Cookie consent is managed via CookieYes, indicating attention to privacy compliance, although explicit privacy and terms policies are not found on the site. Security posture is adequate with HTTPS enforced but could be improved by adding security headers and incident response information. Overall, the site is trustworthy, well-structured, and safe for general audiences.

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

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

  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';…

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  • 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
15
Email security
70
DNS health
80
Network security
20
GDPR outside view
40
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

TEREZA positions itself as an essential educational center in the Czech Republic, offering programs that bridge children, teachers, and nature. Its business model is non-profit, focusing on educational impact rather than commercial revenue. The organization leverages social media channels for outreach and engagement, maintaining active profiles on Facebook, Instagram, LinkedIn, and YouTube. The domain age and registration data support its legitimacy and long-standing presence. The website content is relevant and professionally presented, targeting educators and families interested in sustainable education. The lack of explicit privacy and security policies suggests room for maturity in compliance and governance. No partnerships or subsidiaries are explicitly identified in the data.

Security posture

The website enforces HTTPS, ensuring encrypted communications. However, the absence of explicit security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options indicates potential areas for enhancement to mitigate common web vulnerabilities. No vulnerability disclosure or incident response contacts are published, which limits transparency in security management. The use of reputable third-party services like Google Analytics and CookieYes is noted, but care should be taken to ensure these integrations do not expose user data unnecessarily. Overall, the security posture is moderate but could benefit from formalized policies and technical hardening.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service to improve compliance and user trust.
  2. Implement standard security headers (CSP, X-Frame-Options, X-Content-Type-Options) to enhance protection against common attacks.
  3. Establish and publicize an incident response contact and vulnerability disclosure policy or security.txt file.
  4. Ensure all forms include anti-CSRF tokens and input validation to prevent injection attacks.
  5. Regularly update WordPress core, themes, and plugins to mitigate known vulnerabilities and maintain security hygiene.

Contact details published on the site

Addresses
Legal name
TEREZA, vzdělávací centrum, z. ú.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
TEREZA, vzdělávací centrum, z. ú.
Description
Spojujeme děti, pedagogy a přírodu v ověřených vzdělávacích programech s reálným dopadem. Připojte se k nám a podpořte vzdělávání, na kterém záleží.
Key services
Educational programs connecting children, teachers, and nature
Content quality
good
Branding
consistent

Technology

Stack
WordPress, Divi Theme, Google Fonts, Google Analytics, CookieYes Consent Management
Frameworks
Rank Math SEO
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Marketing tools
Rank Math SEO, CookieYes Consent Management
Transparency
basic

Site quality

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

Key observations

  1. Website uses WordPress with Divi theme and Rank Math SEO plugin.
  2. Cookie consent is implemented via CookieYes.
  3. No explicit privacy policy or terms of service found on the homepage or in metadata.
  4. Contact email and physical address are present in structured data.
  5. Social media presence is active on Facebook, Instagram, LinkedIn, and YouTube.
  6. Google Analytics is used for traffic analysis.
  7. No security.txt or vulnerability disclosure policy found.
  8. No phone numbers explicitly labeled as company contact found in the provided content.
  9. Website content is in Czech language with English locale tags.
  10. No signs of adult or questionable content.
Technical notes

Notes

The website is built on a modern WordPress platform using the Divi theme, which provides a flexible and visually appealing design. SEO is enhanced through the Rank Math plugin, and Google Fonts are used for typography. Cookie consent is managed by CookieYes, reflecting awareness of privacy regulations. Hosting is inferred to be with cesky-hosting.eu based on the nameserver. Performance is moderate, with no explicit indicators of slow loading but also no advanced optimization techniques detected. Mobile optimization is good, with responsive design elements present. Accessibility features are basic, with room for improvement in ARIA roles and keyboard navigation support. Overall, the technical infrastructure is solid but could be enhanced with additional security 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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