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Security report for zvvz.cz

ZVVZ GROUP, a.s. · Energy · Czech Republic

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

65/100

Risk levelMedium

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

ZVVZ GROUP, a.s. is a leading Czech industrial company specializing in the development, manufacturing, delivery, installation, and servicing of equipment primarily for environmental protection, including flue gas cleaning, filtration, ventilation, nuclear energy, HVAC, and pneumatic transport. The company has a long history dating back to 1948 and operates a group of subsidiaries and partner companies, positioning itself as a major player in the energy and manufacturing sectors. The website reflects a professional B2B business model targeting industrial clients and investors. Technically, the website employs modern web technologies such as Bootstrap, jQuery, Google Tag Manager, and Facebook Pixel, and is built on the VOX.AREA CMS platform. It is mobile optimized with good SEO and accessibility basics, though some improvements in accessibility and security headers could be made. The site uses HTTPS with a strong SSL configuration and implements cookie consent mechanisms, demonstrating compliance with GDPR and related privacy regulations. From a security perspective, the site shows good practices including HTTPS enforcement, privacy policies, and ISO 27001 certification. However, the absence of explicit security headers and public vulnerability disclosure policies indicates room for improvement. No critical vulnerabilities or exposed sensitive data were detected. The lack of WHOIS data reduces transparency and trust slightly but does not negate the legitimacy indicated by the website content and business presence. Overall, the website is professional, secure, and compliant with privacy standards, serving its industrial audience effectively. Strategic recommendations include enhancing security headers, publishing vulnerability disclosure and incident response contacts, and improving accessibility features to further strengthen the security posture and user trust.

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

7 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 zvvz.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.

Daily monitoring

Recommended

€25per month

  • 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
67
Security headers
20
Email security
80
DNS health
85
Network security
100
GDPR outside view
40
Average
65

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

ZVVZ GROUP holds a strong market position in the Czech Republic's industrial and energy sectors, leveraging a diversified portfolio of products and services such as ventilators, filtration systems, nuclear energy equipment, and custom manufacturing. The company benefits from a long-established brand and a network of subsidiaries and partners, enabling comprehensive project management and service delivery. Its business model focuses on B2B industrial clients, with growth potential in international markets through subsidiaries in Ukraine and Kazakhstan. The company’s strategic use of certifications like ISO 27001 and GDPR compliance enhances its competitive advantage and trustworthiness. The website’s content and structure support clear communication of its offerings and corporate values, targeting industrial investors and partners effectively.

Security posture

The security posture of the ZVVZ GROUP website is mature, with HTTPS enforced site-wide and implementation of privacy and cookie policies aligned with GDPR. The presence of ISO 27001 certification indicates a formalized information security management system. However, the absence of key security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options suggests potential areas for hardening against common web attacks. No public vulnerability disclosure or incident response contacts are provided, which could limit transparency and responsiveness in case of security incidents. The use of third-party analytics and tracking tools is balanced with privacy compliance measures. Overall, the site demonstrates good security hygiene but would benefit from enhanced header policies and public security communication.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to mitigate common web vulnerabilities.
  2. Publish a public vulnerability disclosure policy and provide clear incident response contact information to improve transparency and trust.
  3. Enhance accessibility features to meet higher standards and improve user experience for all visitors.
  4. Regularly audit and update third-party libraries and tracking scripts to minimize security risks.
  5. Consider obtaining and displaying additional industry certifications and trust badges to strengthen business credibility.

Contact details published on the site

Addresses
Legal name
ZVVZ GROUP, a.s.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ZVVZ GROUP, a.s.
Description
Mezi klíčovou obchodní činnosti holdingu ZVVZ patří vývoj, výroba, dodávky, montáž a servis zejména v oblastech čištění spalin, odlučování a filtrace, ventilátorů, jaderné energetiky, HVAC, a pneumatické dopravy.
Key services
ventilators, custom manufacturing, silos and tankers, filtration and separation, flue gas cleaning, HVAC, nuclear energy, pneumatic transport, pressure vessels and heat exchangers, installation and service
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Bootstrap, Font Awesome, Google Tag Manager, Google Analytics, Facebook Pixel, Revolution Slider, cookieconsent.js
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent implemented
  • Use of security policies (ISMS)
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Facebook Pixel
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Facebook Pixel
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 rich content and navigation.
  2. No WHOIS data available, which is unusual and reduces transparency.
  3. Strong presence of privacy and cookie policies indicating GDPR compliance.
  4. Use of modern web technologies and tracking tools.
  5. No visible security headers detected in HTML source.
  6. No contact emails explicitly found in HTML; phone and address present.
  7. Multiple subsidiaries and partner companies linked.
  8. No terms of service page detected.
  9. No public vulnerability disclosure or incident response contacts found.
Technical notes

Notes

The website is built on the VOX.AREA CMS platform using Bootstrap for responsive design and jQuery for interactivity. It integrates Google Tag Manager and Facebook Pixel for analytics and marketing purposes. The site loads moderate resources including a Revolution Slider for dynamic content presentation. Performance is moderate with good mobile optimization and SEO practices such as meta tags and structured navigation. Accessibility is basic but could be improved. No hosting provider information was detected from the HTML source. The site uses cookie consent scripts to comply with privacy regulations. Overall, the technical infrastructure supports a professional and functional web presence with opportunities for modernization and security enhancements.
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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