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Security report for rmix.cz

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

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

58/100

Risk levelMedium

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

RealityMIX.cz is a well-established Czech real estate portal operated by DALTEN media s.r.o., offering a comprehensive catalog of properties for sale and rent across the Czech Republic. The platform targets real estate buyers, sellers, renters, and agencies, providing not only listings but also marketing services, real estate software, and web solutions tailored for real estate professionals. With over 20 years in the market, the company maintains a strong market position supported by partnerships with TV channels and online portals.

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

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';…

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

Keep watching rmix.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.

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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
72
Security headers
15
Email security
70
DNS health
65
Network security
100
GDPR outside view
25
Average
58

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 rmix.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for rmix.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

The business model revolves around providing a multi-channel real estate marketing platform combined with software and web services for agencies and agents. Revenue streams likely include advertising, subscription fees for agency listings, and software licensing. The company leverages partnerships with media outlets and offers unique services like shared MLS systems. The target customer segments include real estate agencies, developers, and end consumers looking for properties. The company demonstrates growth through diversified offerings and strong brand presence in the Czech market.

Security posture

The website employs HTTPS with good SSL configuration and uses consent-based loading of analytics and advertising scripts, indicating awareness of privacy and security best practices. However, explicit security headers like CSP and X-Frame-Options are not clearly present, and no published security or incident response policies were found. No vulnerabilities or exposed sensitive data were detected in the analyzed content. Overall, the security posture is solid but could be improved with enhanced header policies and published security documentation.

Recommendations

  1. Implement comprehensive security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a formal security policy and incident response contact information to improve transparency and readiness.
  3. Conduct regular audits of third-party scripts and dependencies to mitigate supply chain risks.
  4. Enhance accessibility features to meet higher compliance standards.
  5. Maintain and update privacy and cookie policies to reflect evolving regulations and user expectations.

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
Váš partner na trhu s nemovitostmi | RealityMIX.cz
Key services
Real estate listings (sale and rent), Marketing on TV and online portals, Real estate software (iRest.cz), Websites for real estate agencies and agents, Shared property listing system (RMIX MLS)
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Analytics, Google Tag Manager, Google Adsense, Cloudflare DNS, Swiper.js carousel
Frameworks
Alpine.js (x-data directives), Tailwind CSS (utility classes)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Consent-based script loading
  • No exposed sensitive data in HTML
  • Use of consent management platform

Analytics and tracking

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

Advertising

Ad networks
Google Adsense
Tracking pixels
Google Ads Conversion Tracking, Seznam Retargeting
Marketing tools
Seznam Retargeting
Transparency
good

Site quality

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

Key observations

  1. Website is a professional real estate portal focused on Czech Republic properties.
  2. Content is rich with property listings, developer projects, and real estate news.
  3. Strong marketing partnerships with TV and online portals.
  4. Use of multiple Google services for analytics and advertising.
  5. Consent management implemented for cookies and marketing scripts.
  6. No visible security or privacy policy gaps.
  7. No suspicious or malicious content detected.
Technical notes

Notes

The website uses a modern tech stack including Alpine.js for interactivity and Tailwind CSS for styling, with JavaScript libraries like Swiper.js for carousels. Google services are extensively used for analytics and advertising. The site is mobile optimized and SEO friendly with proper meta tags and Open Graph data. Hosting is supported by Cloudflare DNS, enhancing availability and performance. The site shows moderate performance with room for optimization. The CMS appears custom-built, which may require dedicated maintenance resources. Overall, the technical infrastructure supports a professional and scalable real estate platform.
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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