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Security report for nns.cz

NOVÁ ŠKOLA, s.r.o. · Education · Czech Republic

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

Security score

59/100

Risk levelMedium

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

NOVÁ ŠKOLA, s.r.o. is a Czech educational publisher specializing in textbooks, interactive learning materials, and educational software primarily targeting primary and secondary schools. The company operates an e-commerce platform offering these products and provides support and downloads for their interactive tools. The website is built on WordPress and uses modern web technologies including Google Tag Manager and Google Analytics with privacy-conscious consent settings. The site is well-structured, mobile-optimized, and provides clear navigation and relevant content for its audience. Security posture is adequate with HTTPS enforced and cookie consent mechanisms in place, though explicit security headers and published security policies are absent. WHOIS data for the domain is unavailable, which slightly reduces trustworthiness but does not negate the legitimacy indicated by the website content and business presence. Overall, the site is professional, secure, and compliant with GDPR requirements, serving its educational market effectively.

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

  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';…

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

Keep watching nns.cz

This scan found 23 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
65
Security headers
20
Email security
70
DNS health
75
Network security
100
GDPR outside view
25
Average
59

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 company holds a solid position in the Czech educational publishing market, offering both traditional print and digital interactive educational products. Their business model combines publishing with direct online sales and digital content delivery. The target customers include schools, teachers, students, and parents within the Czech education system. The presence of official Ministry of Education approvals and a comprehensive product range indicates a well-established operation. Partnerships with related educational platforms and software providers enhance their ecosystem. The company appears medium-sized with consistent branding and good content quality, supporting growth and customer engagement through digital channels.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enforced and cookie consent implemented to comply with GDPR. Use of Google Tag Manager and Analytics is configured to deny ad personalization by default, reflecting privacy awareness. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options, and lack of published security or incident response policies, indicate areas for improvement. No vulnerabilities or exposed sensitive data were detected in the HTML content. The lack of a security.txt file or vulnerability disclosure mechanism limits transparency for security researchers. Overall, the security posture is adequate for the business type but could be enhanced to improve resilience and trust.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web attacks.
  2. Publish clear security and incident response policies on the website to improve transparency and preparedness.
  3. Add a security.txt file to facilitate responsible vulnerability disclosure and improve security collaboration.
  4. Regularly audit and update third-party scripts and dependencies to avoid vulnerabilities.
  5. Verify and publish domain WHOIS information or provide justification for privacy protection to enhance trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
NOVÁ ŠKOLA, s.r.o.
Description
Publisher and provider of educational materials including interactive textbooks, workbooks, and educational software primarily for primary and secondary education in the Czech Republic.
Key services
Publishing textbooks and workbooks, Interactive educational software (MIUč+), E-shop for educational products, Support and downloads for educational tools
Content quality
good
Branding
consistent

Technology

Stack
WordPress 6.8.2, jQuery, Google Tag Manager, Google Analytics (gtag.js), Custom JavaScript modules, CSS stylesheets
Frameworks
WordPress
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager with consent set to deny ad storage and personalization by default

Analytics and tracking

Services
Google Analytics, Cloudflare Insights
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Cloudflare Insights
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 rich content and navigation
  2. No WAF or blocking mechanisms detected
  3. WHOIS data unavailable, indicating possible privacy protection or domain registration issue
  4. Website uses HTTPS and modern tracking with consent
  5. Clear business focus on educational publishing and interactive learning
  6. Cookie consent banner present with opt-in options
  7. No explicit security policies or incident response information published
  8. No phone numbers or physical addresses explicitly found in provided content
  9. Contact email nns@nns.cz is present and consistent with domain
Technical notes

Notes

The website is built on WordPress 6.8.2 with jQuery and custom JavaScript modules, leveraging Google Tag Manager and Analytics for tracking. The site uses responsive CSS and modern HTML5 standards, providing good mobile optimization and accessibility at a basic level. Performance is moderate, with no major issues detected. The site lacks advanced accessibility features and some SEO enhancements could be improved. Hosting provider details are not evident from the content. The technical stack is standard for a mid-sized educational publisher, with opportunities to modernize security configurations and improve technical documentation.
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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