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Security report for rmixmls.cz

DALTEN media s.r.o. · Real Estate · Czech Republic

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

55/100

Risk levelMedium

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

RMIX MLS is a Czech Republic-based B2B platform designed to serve real estate agents by providing a comprehensive Multiple Listing Service (MLS) ecosystem. The platform enables agents to share property listings, including public and non-public offers, and facilitates collaboration to accelerate property sales and rentals. The business is operated by DALTEN media s.r.o., a company with over 20 years of experience in real estate software development, positioning RMIX MLS as a credible and established player in the Czech real estate market. The website is professionally designed, mobile-optimized, and provides clear navigation and relevant content tailored to its target audience of real estate professionals. Technically, the website employs modern JavaScript libraries including jQuery and Google Tag Manager for analytics and marketing purposes. It uses HTTPS with good SSL configuration and implements a comprehensive cookie consent mechanism compliant with GDPR. However, the site lacks explicit security headers and a dedicated security policy page, which are areas for improvement. The contact information is clearly presented, including phone, email, physical address, and a contact form, enhancing business credibility. From a security perspective, the site demonstrates good practices such as encrypted connections and consent-based tracking, with no visible vulnerabilities or exposed sensitive data. The WHOIS data aligns well with the business information, showing consistent registration details and domain age appropriate for the company's founding year. No WAF or blocking mechanisms were detected, allowing full content accessibility. Overall, RMIX MLS presents a trustworthy and professional online presence with solid technical and privacy compliance foundations. Strategic enhancements in security headers and incident response disclosures would further strengthen its security posture and trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 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

9 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';…

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Keep watching rmixmls.cz

This scan found 28 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
72
Security headers
15
Email security
55
DNS health
80
Network security
100
GDPR outside view
10
Average
55

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

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 rmixmls.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for rmixmls.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

RMIX MLS operates in the real estate sector, targeting real estate agents and agencies in the Czech Republic. Its business model revolves around providing a SaaS platform for MLS, enabling agents to share and manage property listings collaboratively. The platform integrates with the well-established RealityMIX.cz portal, enhancing market reach and data integration. The company leverages over 20 years of industry experience, which is a significant competitive advantage. Revenue streams likely include subscription or usage fees for MLS services and additional offerings such as personalized agent websites and property web pages. The partnership ecosystem includes multiple related domains and services that complement the core MLS platform. The company demonstrates growth potential through digital innovation and strong market positioning within the Czech real estate industry.

Security posture

The website exhibits a mature security posture with mandatory HTTPS enforcement and a robust cookie consent mechanism aligned with GDPR requirements. No critical vulnerabilities or exposed sensitive information were detected in the HTML content. However, the absence of explicit security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options represents an area for improvement. There is no publicly available security policy or incident response contact information, which could hinder rapid response to security incidents. The use of third-party scripts like Google Analytics and jQuery is standard but requires ongoing monitoring for vulnerabilities. Overall, the security posture is good but could be enhanced by implementing additional HTTP security headers and publishing formal security policies.

Recommendations

  1. Implement HTTP security headers including CSP, HSTS, X-Frame-Options, and X-Content-Type-Options to strengthen protection against common web attacks.
  2. Publish a dedicated security policy and incident response contact information on the website to improve transparency and readiness.
  3. Regularly audit and update third-party libraries and scripts to mitigate risks from vulnerabilities.
  4. Enhance accessibility features to improve compliance and user experience for all users.
  5. Consider adding a terms of service page to clarify user rights and obligations.

Contact details published on the site

Addresses
Legal name
DALTEN media s.r.o.
Registration number
27135306
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
DALTEN media s.r.o.
Description
RMIX MLS is a comprehensive B2B ecosystem platform for real estate agents, enabling sharing and collaboration on property listings, including public and non-public offers, pre-sales, and portfolio expansion.
Key services
Multiple Listing Service (MLS) platform, Real estate portfolio sharing, Websites for agents and properties, Integration with RealityMIX.cz portal
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery 3.6.0, Google Tag Manager, Google Analytics (gtag), Bootstrap (implied by classes and modal usage), Lazy loading images
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent-based cookie management
  • No exposed sensitive data in HTML
  • Form uses POST method with client-side validation

Analytics and tracking

Services
Google Analytics via gtag
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Cookie consent management via cc.dalten.cz
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 no blocking or WAF challenges.
  2. Content is in Czech language targeting Czech real estate professionals.
  3. Comprehensive cookie consent mechanism implemented.
  4. Contact information is clearly provided including phone, email, address, and contact form.
  5. No explicit privacy or security policy pages found on the domain but linked to partner site for privacy policy.
  6. No terms of service page detected.
  7. Use of modern JavaScript libraries and Google Analytics for tracking.
  8. No visible security headers in HTML source; recommend adding.
  9. Business appears legitimate and professionally presented.
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website uses a modern JavaScript-based front-end with deferred loading of scripts and lazy loading of images to optimize performance. It integrates Google Fonts and Google Tag Manager for analytics and marketing. The site is mobile responsive with Bootstrap-like classes and provides a clean, professional design. Hosting details are not explicitly disclosed but the domain registrar is REG-WEBGLOBE, a known provider. Performance is moderate with room for optimization, especially in accessibility and SEO enhancements. The absence of a known CMS suggests a custom-built solution, which may require dedicated maintenance resources. Overall, the technical infrastructure supports the business needs effectively but could benefit from additional security and accessibility improvements.
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. 55/100Medium36 findingsView report
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