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Security report for naseucebnice.cz

SPN - pedagogické nakladatelství · Education · Czech Republic

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

58/100

Risk levelMedium

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

Naše učebnice is an e-commerce platform specializing in the sale of educational textbooks and interactive titles primarily targeting the Czech educational market, including preschool, primary, and secondary school levels. The website is professionally designed, leveraging modern web technologies such as React, Next.js, and Material-UI, providing a responsive and user-friendly experience. The platform integrates Sentry for error tracking and monitoring, indicating a mature approach to technical maintenance. Security measures such as HTTPS and standard security headers are implemented, enhancing the site's security posture. However, the absence of WHOIS data and a cookie consent mechanism slightly detract from the overall trust and privacy compliance. Contact information is clearly provided, supporting business credibility. Overall, the site presents a solid digital presence for an educational publisher with room for improvement in privacy compliance and domain transparency.

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

9 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 naseucebnice.cz

This scan found 25 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
20
Email security
70
DNS health
75
Network security
100
GDPR outside view
10
Average
58

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 business operates in the education sector, focusing on providing textbooks and digital licenses to schools and students in the Czech Republic. Its partnership with SPN Interactive suggests a collaborative ecosystem for delivering virtual school content. The business model is primarily e-commerce, selling both physical and digital educational materials. The presence of new releases and recommended products indicates active content management and market engagement. The company appears medium-sized with a niche market focus. The lack of visible social media presence and limited public business registration data may limit broader market visibility but does not detract from its specialized market position.

Security posture

The website demonstrates a good security posture with enforced HTTPS, presence of multiple security headers, and no visible exposure of sensitive data. The use of Sentry for monitoring suggests proactive incident detection. However, the absence of explicit security or incident response policies and lack of a vulnerability disclosure page indicate areas for improvement in transparency and readiness. GDPR compliance is supported by a comprehensive privacy policy, but the missing cookie consent mechanism is a compliance gap. No critical vulnerabilities or security issues were detected in the provided content.

Recommendations

  1. Implement a cookie consent banner to comply fully with GDPR and enhance user privacy transparency.
  2. Publish a dedicated security policy and incident response page to improve trust and preparedness.
  3. Investigate and resolve the missing WHOIS data to improve domain transparency and trustworthiness.
  4. Enhance accessibility features to improve inclusivity and compliance with accessibility standards.
  5. Consider integrating social media channels to expand market reach and improve brand presence.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SPN - pedagogické nakladatelství
Description
Online platform offering educational textbooks and interactive titles primarily for Czech schools, including preschool, primary, and secondary education levels.
Key services
Sale of printed textbooks, Sale of digital licenses, Interactive educational content
Content quality
good
Branding
consistent

Technology

Stack
React, Next.js, Material-UI, Sentry
Frameworks
Next.js, Material-UI
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Sentry
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Sentry
Transparency
basic

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 unavailable, which is a concern for domain transparency.
  3. Privacy policy and terms of service are present and linked to external URLs.
  4. Contact information includes a company email and phone number with clear context.
  5. Website uses modern web technologies and frameworks.
  6. Security headers and HTTPS are properly implemented.
  7. No explicit cookie consent mechanism detected.
  8. No social media links found in the provided HTML content.
  9. Website targets Czech educational market with a focus on textbooks and digital licenses.
Technical notes

Notes

The website is built on a modern React and Next.js framework with Material-UI for styling, ensuring a responsive and performant user experience. The use of Sentry indicates good error monitoring practices. The site loads multiple asynchronously loaded JavaScript chunks, which may impact initial load times but supports modularity. SEO is basic but present with meta descriptions and titles. Accessibility is basic and could be improved. Hosting and CMS details are not explicitly found. Overall, the technical infrastructure is solid but could benefit from performance optimizations and enhanced SEO and accessibility features.
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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