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Security report for heluzdomy.cz

HELUZ cihlářský průmysl a.s. · Real Estate · Czech Republic

High risk. 11 critical or high findings in GDPR outside view, Network security and 2 other checks.

Security score

40/100

Risk levelHigh

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

HELUZ cihlářský průmysl a.s. operates the website heluzdomy.cz, offering detailed family house projects and comprehensive construction documentation primarily targeting individuals and families planning to build homes. The company positions itself as a provider of high-quality, energy-efficient house designs using their proprietary HELUZ brick system and premium windows. The website is professionally designed with clear navigation and good mobile optimization, leveraging modern technologies including Xaver CMS, Google Tag Manager, and Facebook Pixel for analytics and marketing. From a security perspective, the site enforces HTTPS and implements a granular cookie consent mechanism, demonstrating compliance with GDPR. However, no explicit security headers were detected, and no direct contact information or incident response policies were found on the homepage, which could be improved. The absence of WHOIS data limits the ability to fully verify domain legitimacy, though the website content and branding appear consistent and professional. Overall, the website presents a solid digital presence with good privacy compliance and marketing practices. The main risks relate to incomplete domain registration transparency and minor security header omissions. Strategic improvements in these areas would enhance trust and security posture.

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

11 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

  2. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  3. 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';…

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Keep watching heluzdomy.cz

This scan found 27 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

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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
62
Security headers
20
Email security
55
DNS health
80
Network security
0
GDPR outside view
25
Average
40

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 · found on this site
  • 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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention heluzdomy.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for heluzdomy.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

HELUZ cihlářský průmysl a.s. targets the residential construction market in the Czech Republic, focusing on providing detailed house project plans and supporting documentation. Their business model centers on selling project packages and assisting customers with project placement and material procurement. The company leverages its proprietary brick system and premium window products as competitive advantages. The website reflects a medium-sized enterprise with consistent branding and a clear value proposition. The presence of privacy and cookie policies indicates regulatory awareness. The company appears to maintain partnerships with its parent or related HELUZ brand sites. Growth potential lies in expanding digital marketing and improving direct customer contact channels.

Security posture

The website demonstrates a moderate security maturity level with enforced HTTPS and a comprehensive cookie consent mechanism supporting GDPR compliance. However, the lack of detected security headers such as Content-Security-Policy or X-Frame-Options suggests room for improvement in defense-in-depth. No vulnerabilities or exposed sensitive data were identified in the HTML content. The absence of explicit security or incident response policies and contact channels reduces transparency and preparedness. Overall, the security posture is adequate for the business type but would benefit from enhanced header implementation and published security policies.

Recommendations

  1. Implement standard security headers including Content-Security-Policy, X-Frame-Options, and X-XSS-Protection to strengthen browser security.
  2. Publish explicit security and incident response policies on the website to improve transparency and customer trust.
  3. Enhance domain registration transparency by ensuring WHOIS data is publicly available and accurate.
  4. Add clear company contact information including verified emails and phone numbers to facilitate customer and security communications.
  5. Regularly audit third-party scripts and tracking technologies to mitigate potential vulnerabilities and privacy risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
HELUZ cihlářský průmysl a.s.
Description
Projekty rodinných domů zpracované do posledního detailu. Smysluplné domy HELUZ jsou navrženy z cihelného systému HELUZ s maximální energetickou úsporností a prémiovými okny IZOS.
Key services
House project selection, Comprehensive construction documentation, Project placement assistance, Project cost refund upon material purchase
Content quality
good
Branding
consistent

Technology

Stack
Xaver CMS 4.7.0, jQuery, Google Tag Manager, Google Analytics, Facebook Pixel
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with granular controls
  • No exposed sensitive data in HTML

Analytics and tracking

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

Advertising

Ad networks
Google Ads
Tracking pixels
Facebook Pixel
Transparency
good

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 about house projects
  2. Cookie consent mechanism is implemented with granular user controls
  3. No contact emails or phone numbers explicitly found on homepage
  4. WHOIS data unavailable, limiting domain trust verification
  5. Use of modern CMS and tracking technologies
  6. No security headers detected in provided data
  7. No explicit security or incident response policies found
Technical notes

Notes

The website is built on Xaver CMS 4.7.0, utilizing jQuery and modern analytics/tracking tools such as Google Tag Manager and Facebook Pixel. The site loads media-rich content including videos and images optimized for desktop and mobile devices, indicating good mobile responsiveness and moderate performance. Meta tags and Open Graph data are properly configured for SEO and social sharing. Accessibility features are basic but present. No hosting provider information was detected. The technical stack is modern and appropriate for the business needs, though performance could be further optimized by implementing advanced caching and security headers.
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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