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Security report for zonercloud.cz

ZONER a.s. · Technology · Czech Republic

Medium risk. 5 critical or high findings in GDPR outside view and DNS health.

Security score

75/100

Risk levelMedium

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

ZonerCloud, operated by ZONER a.s., is a leading Czech cloud service provider offering a wide range of cloud computing solutions including VPS, managed servers, email hosting, AI/GPU servers, and cloud storage. The company emphasizes high performance, rapid server provisioning, and strong availability guarantees, positioning itself as a market leader in the Czech Republic. Their services cater primarily to businesses and professionals requiring reliable and scalable cloud infrastructure. Technically, the website is built on modern frameworks such as Bootstrap and jQuery, with integrations for analytics and marketing tools like Google Tag Manager, Microsoft Clarity, and Facebook Pixel. The infrastructure leverages virtualization platforms including VMware, Hyper-V, and Proxmox VE, indicating a mature and robust technical environment. The site is well-optimized for performance, mobile responsiveness, and accessibility. From a security perspective, the site enforces HTTPS with DigiCert SSL certificates and implements security best practices such as DKIM/SPF for email, regular backups, and spam/antivirus protections. However, explicit incident response policies and security contact information are not publicly available, representing an area for improvement. Privacy compliance is strong, with comprehensive privacy and cookie policies and consent mechanisms in place. Overall, the website and business present a professional and trustworthy image with high-quality content and strong market positioning. The absence of WHOIS data is a notable anomaly but does not significantly detract from the overall credibility given the extensive trust signals and certifications displayed. Strategic recommendations include enhancing transparency around security incident handling and maintaining vigilance on third-party tracking scripts to uphold privacy standards.

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

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

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, Twitter, LinkedIn

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

  2. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Weak SPF Policy

      SPF record has permissive policy allowing any server to send email

      What to do: Use -all or ~all qualifier for better email security

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

Keep watching zonercloud.cz

This scan found 15 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
90
Security headers
95
Email security
70
DNS health
70
Network security
100
GDPR outside view
25
Average
75

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

ZonerCloud holds a strong position in the Czech cloud services market, leveraging its parent company ZONER a.s.'s reputation. Their competitive advantage lies in high-performance servers, rapid provisioning times, and comprehensive managed services. The business model focuses on B2B cloud infrastructure and specialized AI/GPU computing services, targeting enterprises, SMEs, and tech-savvy customers. Revenue streams likely include subscription fees for VPS, managed hosting, email solutions, and AI/GPU rentals. The company maintains a broad partnership ecosystem, including hardware vendors like Dell, AMD, NVIDIA, and software platforms such as Proxmox and Microsoft Hyper-V. Growth indicators include continuous service innovation, such as LLM API offerings and AI image editing tools, and a large, satisfied customer base with long-term relationships. Strategic observations suggest a focus on expanding AI/GPU services and maintaining high SLA standards to differentiate from global cloud providers.

Security posture

ZonerCloud demonstrates a mature security posture with enforced HTTPS, strong SSL certificates, and email authentication technologies (DKIM, SPF). Regular backups and antivirus/antispam protections are in place, supporting data integrity and availability. The presence of security certifications and a CSIRT logo indicates organizational commitment to security. However, the lack of publicly available incident response and vulnerability disclosure policies limits transparency and may hinder rapid external reporting of security issues. No critical vulnerabilities or exposed sensitive data were detected in the website content. Compliance with GDPR and NIS2 is implied through privacy policies and certifications, but explicit statements or contacts for data protection officers are missing. Overall, the security maturity is high but could be improved by publishing formal security policies and contact points.

Recommendations

  1. Publish a dedicated security incident response and vulnerability disclosure policy page with clear contact information.
  2. Provide direct contact details for a Data Protection Officer or security team to enhance transparency and compliance.
  3. Regularly audit and minimize third-party tracking scripts to strengthen privacy compliance and reduce attack surface.
  4. Maintain and update security headers and SSL configurations to adhere to evolving best practices.
  5. Enhance WHOIS domain registration transparency to improve trust and legitimacy perception.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ZONER a.s.
Description
ZonerCloud provides cloud services on VMware and Hyper-V platforms including virtual servers (VPS), managed multihosting, web storage, email hosting, and SMTP servers.
Key services
Cloud Server VPS, Managed Cloud Servers, Cloud Mail, Cloud Newsletter, Cloud Disk, AI/GPU Servers, LLM API Rental
Content quality
excellent
Branding
consistent

Technology

Stack
Bootstrap, jQuery, FontAwesome, Ion.RangeSlider, Slick Carousel, AOS (Animate on Scroll), Lightbox2, Google Tag Manager, Microsoft Hyper-V, Proxmox VE, VMware
Frameworks
Bootstrap
Platforms
VMware, Hyper-V, Proxmox VE
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of DigiCert SSL certificates
  • Automatic SSL certificate installation
  • Regular backups
  • Spam and antivirus protection on email
  • DKIM and SPF email authentication

Analytics and tracking

Services
Google Analytics, Microsoft Clarity, LinkedIn Insight
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads, LinkedIn Ads, Facebook Ads
Tracking pixels
Microsoft Clarity, Facebook Pixel, LinkedIn Insight Tag, Google Analytics (via GTM)
Marketing tools
ManyChat (commented out)
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 no blocking detected.
  2. WHOIS data is missing, which is unusual and reduces trust slightly.
  3. Strong presence of trust signals including customer testimonials and certifications.
  4. Comprehensive privacy and cookie policies with consent mechanisms implemented.
  5. Use of modern web technologies and good SEO and accessibility practices.
  6. No security contact or incident response information publicly available.
  7. Multiple external tracking and advertising scripts present but privacy compliant.
  8. Website content is business-focused and safe for general audiences.
Technical notes

Notes

The website employs a modern and robust technology stack including Bootstrap for responsive design, jQuery for DOM manipulation, and various UI libraries like Ion.RangeSlider and Slick Carousel for enhanced user experience. The infrastructure is based on industry-standard virtualization platforms VMware, Hyper-V, and Proxmox VE, ensuring flexibility and high availability. Performance optimizations such as fast server provisioning (55 seconds) and SSD storage are highlighted. The site is well-optimized for mobile devices and accessibility, with good SEO practices evident in meta tags and structured navigation. Potential technical risks include reliance on multiple third-party analytics and advertising scripts which require ongoing privacy and security management. Overall, the technical implementation supports a high-quality user experience and scalable cloud service delivery.
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

Earlier scans of this domain

  1. 75/100Medium21 findingsView report
  2. 78/100Low14 findingsView report
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