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Security report for zse.sk

Energetika Slovensko, a.s. · Energy · Slovakia

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

69/100

Risk levelMedium

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

Energetika Slovensko, a.s., operating under the ZSE brand, is a well-established energy supplier in Slovakia with over 100 years of history. The company provides electricity, gas, photovoltaic solutions, climate control, and electric mobility services to households, businesses, and organizations. The website reflects a mature digital presence with a professional design, clear navigation, and comprehensive service offerings. Technically, the site uses modern JavaScript frameworks such as Vue.js, integrates cookie consent management via Cookiebot, and employs Google Tag Manager and Exponea for analytics and marketing. Security posture is solid with HTTPS enforced and no visible vulnerabilities, although explicit security headers and incident response information are absent. Privacy compliance is strong with GDPR-aligned policies and consent mechanisms. Overall, the website is trustworthy, user-friendly, and aligned with the company's business claims and market position.

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

6 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: Facebook, LinkedIn, YouTube

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

  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 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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  • TLS certificates and expiry
  • DNS records
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  • Security headers
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  • 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
77
Security headers
45
Email security
80
DNS health
70
Network security
100
GDPR outside view
40
Average
69

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

ZSE holds a leading position in the Slovak energy market, serving over a million customers with a broad portfolio of energy products and services. The business model focuses on energy supply and related services, including innovative offerings like photovoltaics and electromobility. The company targets residential and commercial customers, emphasizing sustainability and customer care. The presence of official social media channels and a corporate group website indicates a robust partnership ecosystem. The company’s longevity and market penetration suggest stable revenue streams and growth potential. Strategic observations include the recent merger forming Energetika Slovensko, a.s., which may enhance market reach and operational efficiency.

Security posture

The website demonstrates a mature security posture with mandatory HTTPS and cookie consent mechanisms in place. No sensitive data is exposed in the HTML, and no vulnerable libraries are detected. However, the absence of explicit security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options reduces the overall security hardening. There is no publicly available security policy or incident response contact, which could hinder rapid response to security incidents. GDPR compliance is evident, but further transparency on data retention and incident handling would strengthen trust. Overall, the security maturity is good but could be improved with additional controls and disclosures.

Recommendations

  1. Implement and publish explicit security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Create and make publicly accessible a security policy page detailing security practices and incident response procedures.
  3. Provide clear incident response contact channels such as security@ or abuse@ email addresses to facilitate vulnerability reporting.
  4. Consider publishing a vulnerability disclosure policy or security.txt file to encourage responsible security research.
  5. Enhance transparency on data retention policies and user data handling to further improve GDPR compliance and user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Energetika Slovensko, a.s.
Description
ZSE už vyše 100 rokov dodáva energiu do vašich domovov, firiem a organizácií. Staráme sa o vaše pohodlie a šetríme vaše výdavky 24 hodín 7 dní v týždni.
Key services
elektrina, plyn, fotovoltika, klimatizácie, elektromobilita, online účet, poistenia
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Vue.js, Cookiebot, Google Tag Manager, Exponea
Frameworks
Vue.js
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

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

Analytics and tracking

Services
Google Tag Manager, Exponea
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Cookiebot, Exponea
Marketing tools
Exponea, Cookiebot
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well maintained.
  2. Strong branding and consistent messaging about energy supply and sustainability.
  3. Comprehensive cookie consent and privacy mechanisms implemented.
  4. No visible security policy or incident response information publicly available.
  5. No direct contact emails or phone numbers found in HTML; contact likely via forms.
  6. Multiple official social media channels linked.
  7. No suspicious or malicious content detected.
  8. No WAF or blocking detected; full content accessible.
Technical notes

Notes

The website leverages a modern JavaScript framework (Vue.js) and integrates third-party services for cookie management (Cookiebot), analytics (Google Tag Manager), and marketing automation (Exponea). The site is mobile-optimized with responsive design and good accessibility features. Performance is moderate, likely due to rich media content and multiple scripts, but overall user experience remains smooth. No CMS is explicitly detected, suggesting a custom or proprietary platform. Hosting details are not disclosed in the HTML. Technical risks are minimal, but the lack of explicit security headers and incident response information represents a potential operational risk. Opportunities exist to modernize security practices and improve 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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