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Security report for realitniservery.cz

ČESKÝ INTERNET s.r.o. · Real Estate · Czech Republic

Medium risk. 11 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

51/100

Risk levelMedium

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

Realitní servery.cz is a Czech Republic-based real estate portal operated by Český Internet s.r.o., providing a comprehensive platform for property listings including sales, rentals, and auctions. The site aggregates listings from various regional real estate agencies and brokers, offering advanced search filters and a broker directory to facilitate user navigation. It targets individuals and businesses interested in Czech real estate, positioning itself as a trusted aggregator with a medium-sized market presence since 2008. Technically, the website employs modern web technologies including jQuery, Vue.js, Google Analytics, and Facebook SDK, ensuring a responsive and user-friendly experience. The site is served over HTTPS with good SSL configuration and includes cookie consent mechanisms compliant with GDPR. However, the absence of WHOIS data limits transparency regarding domain registration details. From a security perspective, the site demonstrates good practices such as HTTPS enforcement and use of consent management platforms, but lacks explicit public security policies or incident response information. No critical vulnerabilities or exposed sensitive data were detected. Overall, the site maintains a moderate to good security posture with room for improvement in security headers and transparency. The overall risk assessment is moderate with a legitimacy score of 50 due to missing WHOIS data but balanced by strong business presence and compliance indicators. Strategic recommendations include enhancing security headers, publishing security and incident response policies, and resolving WHOIS data visibility to improve trust and compliance.

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

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

    • 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 realitniservery.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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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
45
DNS health
70
Network security
100
GDPR outside view
10
Average
51

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

Realitní servery.cz operates as an important entity in the Czech real estate sector, aggregating listings and broker information to serve a broad audience of property buyers, renters, and real estate professionals. Its business model centers on providing a centralized platform for property search and broker discovery, likely generating revenue through advertising and partnerships with real estate agencies. The company benefits from a strong partnership with Český Internet s.r.o., which supports its technical infrastructure and privacy compliance. The extensive network of linked regional real estate domains indicates a wide partnership ecosystem enhancing market coverage. Growth indicators include a large number of listings and brokers, with continuous content updates. The company maintains a professional online presence with consistent branding and good content quality.

Security posture

The website demonstrates a moderate to good security maturity level. HTTPS is enforced site-wide, and security best practices such as cookie consent and privacy policy adherence are implemented. However, the absence of advanced security headers like Content-Security-Policy and lack of publicly available security or incident response policies indicate gaps in transparency and defense-in-depth. No vulnerabilities or exposed sensitive data were observed in the HTML content. The missing WHOIS data raises concerns about domain registration transparency but does not directly indicate malicious activity. Compliance with GDPR is evident through privacy and cookie policies. Incident response readiness and security culture indicators are not publicly visible, suggesting an area for improvement.

Recommendations

  1. Implement additional HTTP security headers including Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to enhance protection against common web attacks.
  2. Publish a security policy and incident response plan on the website to improve transparency and user trust.
  3. Address the missing WHOIS data by ensuring domain registration details are properly published and maintained to enhance legitimacy and trust.
  4. Continue to maintain and update privacy and cookie policies to comply with evolving GDPR requirements.
  5. Consider adding a security.txt file to facilitate vulnerability disclosure and improve security communication.

Contact details published on the site

Addresses
Legal name
Český Internet s.r.o.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ČESKÝ INTERNET s.r.o.
Description
Prověřené realitní servery na jednom místě. Vybírejte podle okresů nebo typu nemovitosti na prodej či k pronájmu.
Key services
Real estate listings for sale and rent, Broker and real estate agency directories, Advanced property search filters
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Google Analytics, Google Tag Manager, Facebook SDK, Vue.js (importmap), Multiple Select JS, Lazy loading images, HTML5, CSS3
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of consent management platform for cookies

Analytics and tracking

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

Advertising

Ad networks
Google Adsense, adv.ci.cz
Tracking pixels
Facebook Pixel, Twitter Universal Website Tag
Marketing tools
AppConsent.io
Transparency
good

Site quality

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

Key observations

  1. Website is a Czech real estate portal aggregating listings and broker information.
  2. Content is in Czech language and targeted at Czech market.
  3. No WHOIS data available, which is unusual and reduces transparency.
  4. Site uses HTTPS and modern tracking and advertising technologies.
  5. Privacy and cookie policies are present and GDPR compliant.
  6. No signs of adult or unsafe content.
  7. No visible security policy or incident response information.
  8. Contact information includes company email and physical address.
  9. Website is well structured with advanced search forms and filters.
  10. No WAF or blocking detected; content fully accessible.
Technical notes

Notes

The website uses a combination of modern JavaScript libraries and frameworks including jQuery and Vue.js, along with Google Analytics and Facebook SDK for tracking and marketing. The presence of multiple CSS stylesheets and lazy loading techniques indicates attention to performance and user experience. The site is mobile optimized with responsive images and layout. SEO is supported by comprehensive meta tags and Open Graph data. However, no specific CMS was detected, suggesting a custom or proprietary platform. Hosting provider details are not evident from the content. Performance is moderate with room for optimization. Accessibility is basic but functional. Overall, the technical infrastructure supports a professional real estate portal with scalable features.
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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