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Security report for estav.cz

Topinfo s.r.o. · Real Estate · Czech Republic

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

Security score

45/100

Risk levelHigh

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

ESTAV.cz is a Czech online portal specializing in construction, architecture, housing, and technical building equipment news and information. Operated by Topinfo s.r.o., it serves professionals and enthusiasts in the Czech construction and real estate sectors by providing expert articles, news updates, and advertising opportunities. The website demonstrates a consistent brand presence and offers a variety of content including editorial news, company news, and recommended articles. Technically, the site uses a mature technology stack including jQuery, Bootstrap, and a proprietary CMS (Topinfo CMS), with integrations for Google Analytics, Google Tag Manager, and Gemius Audience for analytics and marketing. The site is mobile-optimized and provides a good user experience with clear navigation and relevant content. Security posture is adequate with HTTPS enforced, but lacks some advanced security headers and explicit public security policies. Privacy compliance is basic with GDPR and terms of use pages present, and a cookie consent mechanism implemented, though no explicit cookie policy page was found. WHOIS data is unavailable, which limits domain trust assessment, but the website content and business information suggest legitimate operation. Overall, ESTAV.cz is a well-established content portal with moderate technical sophistication and a good level of professionalism.

Scanned

This is an earlier scan of estav.cz. View the latest report

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 estav.cz

This scan found 26 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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

€39.90one-time

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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
15
Email security
70
DNS health
75
Network security
20
GDPR outside view
25
Average
45

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

ESTAV.cz holds a strong position in the Czech construction and architecture information market, targeting industry professionals and consumers interested in building and housing topics. Its business model revolves around content provision and advertising, supported by a newsletter and social media presence. The portal benefits from partnerships with related sites such as estav.tv and tzb-info.cz, enhancing its ecosystem. The lack of WHOIS data is a concern but does not currently impact operational credibility. The portal's content quality and consistent branding support its market presence, while its moderate size and medium complexity technology stack align with its role as a specialized media platform.

Security posture

The website enforces HTTPS and uses asynchronous loading of analytics and advertising scripts, which is positive for security and performance. However, it lacks visible security headers such as Content-Security-Policy and X-Frame-Options, which could improve protection against common web attacks. No public security policy or incident response information is available, and no vulnerability disclosure or security.txt file was found. The site does not expose sensitive data in its HTML content. Overall, the security posture is moderate but could be enhanced by implementing additional headers and publishing security policies.

Recommendations

  1. Implement security headers including Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to enhance protection against web vulnerabilities.
  2. Publish a clear security policy and incident response contact information to improve transparency and readiness.
  3. Regularly update third-party libraries and scripts to mitigate risks from outdated components.
  4. Enhance privacy compliance by providing a dedicated cookie policy page and detailed data retention information.
  5. Monitor domain WHOIS status and ensure registration data is complete and publicly accessible to improve trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Topinfo s.r.o.
Description
Novinky ze stavebnictví, architektury, bydlení a TZB. Aktuální stavební trendy, materiály, realizace, zkušenosti, řešení pro Vaši stavbu ve specializovaných tématech.
Key services
News and articles on construction, architecture, housing, Advertising platform, Newsletter subscription, Event and conference promotion
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.12.4, Bootstrap, Fancybox 3.3.5, Owl Carousel, Google Tag Manager, Google Analytics, Gemius Audience, Topinfo CMS
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager and analytics scripts asynchronously

Analytics and tracking

Services
Google Analytics, Gemius Audience, Hotjar
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Google Ad Manager, DoubleClick
Tracking pixels
Gemius Audience, Hotjar
Marketing tools
Gemius Audience, Hotjar
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 Czech portal focused on construction, architecture, and housing.
  2. Content is rich with articles, news, and company information.
  3. No WHOIS data available, which is unusual and may indicate domain registration or WHOIS server issues.
  4. Website uses multiple third-party analytics and advertising services.
  5. Privacy and terms pages are present, indicating some compliance with regulations.
  6. No direct company contact emails or phone numbers found in the HTML content.
  7. Social media presence on Facebook and YouTube is confirmed.
  8. No security.txt or explicit vulnerability disclosure found.
  9. No explicit security policy or incident response information publicly available.
Technical notes

Notes

The website is built on a stable technology stack featuring jQuery 1.12.4, Bootstrap, and Topinfo CMS. It integrates multiple third-party analytics and advertising services such as Google Analytics, Google Tag Manager, Gemius Audience, and Hotjar. The site is mobile-optimized and uses responsive design techniques. Performance is moderate with asynchronous script loading. SEO is supported by proper meta tags and Open Graph data. Accessibility is basic but could be improved. The site does not use modern JavaScript frameworks like React or Angular but relies on traditional web technologies. Hosting provider details are not disclosed. Overall, the technical infrastructure is solid for a content portal but could benefit from modernization and enhanced accessibility 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

Earlier scans of this domain

  1. 55/100Medium30 findingsView report
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