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Security report for svetenergie.cz

ČEZ, a.s. · Energy · Czech Republic

Medium risk. 5 critical or high findings in GDPR outside view and SSL/TLS.

Security score

71/100

Risk levelMedium

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

Svět Energie is an educational portal operated by ČEZ, a.s., a major energy company in the Czech Republic. The website provides rich interactive content focused on physics and energy, targeting students, teachers, and the general public interested in energy education. It offers videos, experiments, quizzes, 3D printing models, and virtual tours of power plants, positioning itself as a comprehensive learning resource in the energy sector. Technically, the site is built on modern frameworks such as Next.js and React, with good mobile optimization and accessibility features. Security posture is strong with HTTPS enforcement and security headers, although explicit security and privacy policies are not prominently published. The domain WHOIS data is unavailable, likely due to privacy protection, but the site’s affiliation with ČEZ and professional presentation support its legitimacy. Overall, the site is a trustworthy, well-maintained educational platform with room for improvement in privacy transparency and security disclosures.

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

5 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

      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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching svetenergie.cz

This scan found 19 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
57
Security headers
75
Email security
70
DNS health
85
Network security
100
GDPR outside view
40
Average
71

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 website serves as a strategic educational tool for ČEZ, enhancing brand presence and public engagement in energy topics. Its market positioning leverages the parent company's reputation to provide authoritative content. The business model focuses on free educational content delivery, likely funded by ČEZ as part of corporate social responsibility and public outreach. The portal targets educational institutions and individuals interested in energy science, supporting STEM education. Partnerships with related domains such as ČEZ Akademie and job portals indicate a broader ecosystem engagement. Growth potential lies in expanding interactive content and increasing user engagement through competitions and virtual experiences.

Security posture

The site demonstrates a mature security posture with HTTPS, modern security headers, and cookie consent mechanisms. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of published security policies, incident response contacts, and vulnerability disclosure mechanisms represents a compliance gap. GDPR compliance is partially addressed via cookie consent but lacks a detailed privacy policy. The site would benefit from publishing a security.txt file and providing clear data protection officer contact information to enhance trust and regulatory compliance.

Recommendations

  1. Publish a comprehensive privacy policy page detailing GDPR compliance and data handling practices.
  2. Add a security policy and incident response information accessible to users and security researchers.
  3. Implement and publish a vulnerability disclosure program or security.txt file.
  4. Provide contact information for a Data Protection Officer or privacy contact.
  5. Regularly review and update security headers and cookie consent mechanisms to maintain compliance.

Contact details published on the site

Addresses
Legal name
ČEZ, a.s.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ČEZ, a.s.
Description
Svět energie.cz is an educational portal focused on physics and energy, offering interesting videos, experiments, and free applications.
Key services
Interactive energy education, Videos and experiments, 3D printing models, Knowledge quizzes, Virtual tours of power plants, Educational programs for schools
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Cookiebot
Frameworks
Next.js
Performance
fast
Mobile
excellent
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
basic

Advertising

Tracking pixels
Cookiebot
Marketing tools
Cookiebot
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 and interactive features.
  2. No WHOIS data available, possibly due to privacy protection or registry restrictions.
  3. Professional and consistent branding aligned with ČEZ, a.s.
  4. Good implementation of cookie consent and privacy mechanisms.
  5. No explicit privacy policy page found, which is a minor compliance gap.
  6. No visible security or incident response policies published.
  7. No contact phone numbers found; only email and physical address provided.
  8. Use of modern web technologies and frameworks.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website uses a modern tech stack including React and Next.js, enabling server-side rendering and good performance. It integrates Google Tag Manager and Cookiebot for analytics and cookie management. The site is mobile-optimized with responsive design and accessibility features such as skip navigation links. The CMS appears custom-built (Edee), supporting structured content blocks and multilingual capabilities. Performance is fast with deferred script loading and optimized images. Technical risks are minimal, but reliance on third-party scripts requires ongoing monitoring for vulnerabilities. Opportunities exist to enhance SEO with more structured data and to improve privacy transparency.
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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