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Security report for estav.cz

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

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

55/100

Risk levelMedium

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

ESTAV.cz is a Czech online media portal specializing in construction, architecture, housing, and technical building equipment. Operated by Topinfo s.r.o., it provides news, expert articles, advertising services, and related digital content targeting professionals and enthusiasts in the construction and real estate sectors. The portal maintains a consistent brand presence and offers additional services such as an online TV channel and energy price calculators. Technically, the website uses a mature technology stack including jQuery, Bootstrap, and Google Tag Manager, supported by a proprietary CMS. It is well-optimized for mobile and SEO, with good user experience and navigation. Security posture is solid with HTTPS enforcement and cookie consent mechanisms, though some security headers could be improved. The absence of WHOIS data limits domain trust analysis, but the professional presentation and content quality indicate a legitimate and established business. Privacy policies and GDPR compliance are clearly addressed, supporting user trust and regulatory adherence.

Scanned

NIS2 and GDPR posture

GDPR outside view
85/ 100 · Low
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

6 findings rated critical or high. Fix these first.

  1. 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching estav.cz

This scan found 22 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

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
67
Security headers
15
Email security
70
DNS health
75
Network security
20
GDPR outside view
85
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

Technical appendix

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

Business context

Business profile

The portal holds a strong position in the Czech construction and architecture media market, leveraging a content-driven business model with advertising revenue streams. Its partnerships with related sites and forums enhance its ecosystem. The target audience includes industry professionals, architects, builders, and homeowners seeking expert advice and news. The company demonstrates growth potential through diversified content formats and digital services. The lack of explicit company contact emails or phone numbers on the site suggests a focus on digital engagement rather than direct sales or support calls. The portal's consistent branding and trust signals such as ISSN registration and web archive certification reinforce its market credibility.

Security posture

The website exhibits a good security maturity level with HTTPS enforced and cookie consent implemented, aligning with GDPR requirements. Use of reputable analytics and tracking services is balanced with user privacy controls. However, the site lacks some recommended security headers like X-Frame-Options and X-Content-Type-Options, which could mitigate clickjacking and MIME sniffing risks. The use of an older jQuery version may expose the site to known vulnerabilities if not properly patched. No evidence of exposed sensitive data or security incidents was found. The absence of a vulnerability disclosure policy or security.txt file indicates room for improvement in incident response readiness and transparency.

Recommendations

  1. Implement additional security headers such as X-Frame-Options and X-Content-Type-Options to enhance protection against common web attacks.
  2. Upgrade jQuery and other JavaScript libraries to the latest secure versions to mitigate known vulnerabilities.
  3. Consider publishing a security.txt file to facilitate responsible vulnerability disclosure and improve security transparency.
  4. Enhance accessibility features to improve compliance and user experience for all visitors.
  5. Maintain and regularly update privacy and cookie policies to reflect evolving regulations and best practices.
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 and architecture, Advertising platform, Online TV portal (ESTAV.tv), Energy price calculator, Discussion forums
Content quality
good
Branding
consistent

Technology

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

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Use of Google Tag Manager and Analytics with consent
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Hotjar, Gemius
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ad Manager, Gemius
Tracking pixels
Hotjar, Gemius
Marketing tools
Cookie Script
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 in Czech language.
  2. No WAF or blocking mechanisms detected.
  3. WHOIS data unavailable, limiting domain trust analysis.
  4. Strong privacy and cookie policies with consent mechanisms implemented.
  5. Use of multiple analytics and tracking services with user consent.
  6. Professional design and clear navigation structure.
  7. No explicit or adult content detected.
  8. Multiple external links to related partner sites and social media.
  9. Advertising and marketing practices are transparent and standard.
Technical notes

Notes

The website is built on a custom CMS (Topinfo CMS) with a frontend leveraging jQuery 1.12.4, Bootstrap, Fancybox, and Owl Carousel for UI components and interactivity. It integrates multiple third-party analytics and tracking tools including Google Analytics, Hotjar, and Gemius, managed via Google Tag Manager. The site uses asynchronous script loading to optimize performance. Mobile optimization is good with responsive design and viewport meta tags. SEO is supported by comprehensive meta tags and Open Graph data. Performance is moderate, with potential improvements by updating legacy libraries and optimizing resource loading. No hosting provider details were found in the content. Overall, the technical infrastructure supports a professional and content-rich portal but could benefit from modernization and enhanced security practices.
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. 45/100High34 findingsView report
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