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Security report for estudio.cz

eStudio.cz · Technology · Czech Republic

High risk. 8 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

49/100

Risk levelHigh

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

eStudio.cz is a Czech-based digital agency specializing in comprehensive web design, e-commerce solutions, online marketing, and reliable web hosting services. The company emphasizes long-term client relationships, with over 90% of clients retained for more than nine years, indicating a stable market position and trusted service delivery. Their offerings include strategic marketing, online marketing, successful websites, profitable e-shops, and integration with information systems, targeting businesses seeking to enhance their online presence and sales. Technically, the website employs a modern technology stack including HTML5, CSS3, JavaScript libraries such as jQuery and Swiper.js, Google Maps API, Google reCAPTCHA, Google Tag Manager, Google Analytics, and Smartlook for user behavior analytics. The site is built on the Reflex-eshop CMS platform, optimized for mobile devices, and demonstrates good SEO practices. Performance is moderate, with room for improvement in accessibility features. From a security perspective, the site enforces HTTPS and uses reCAPTCHA to protect forms, alongside a cookie consent mechanism compliant with GDPR. However, it lacks explicit security headers like Content-Security-Policy or X-Frame-Options, and no visible incident response or security policy pages are present. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the website presents a professional and trustworthy digital presence with good business credibility and privacy compliance. The absence of WHOIS data reduces domain trustworthiness slightly, but the quality of the site and business indicators suggest legitimacy. Strategic recommendations include enhancing security headers, publishing security policies, and improving accessibility to further strengthen the security posture and user experience.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

8 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 estudio.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

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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
70
DNS health
80
Network security
20
GDPR outside view
40
Average
49

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 estudio.cz, from OffSeq Breach.

Total records
22
Employees
3
Customers
9
Third parties
10
Weak passwords
18%

Latest record dated 2026-06-01 · 6 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for estudio.cz.

Select it in the checkout above.

Masked preview

  • –estudio.cz2026-06-01
  • –mail.estudio.cz2026-05-15
  • –www.estudio.cz2026-05-15

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)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

eStudio.cz operates as a specialized digital agency in the Czech Republic, focusing on web design, e-commerce, and online marketing services. Their business model revolves around providing end-to-end digital solutions, including strategy, design, implementation, hosting, and ongoing maintenance. The company targets small to medium-sized businesses seeking to improve their online visibility and sales channels. Their competitive advantage lies in long-term client retention and a comprehensive service portfolio. The presence of client references and a professional website supports their market credibility. Revenue streams likely include project-based web development, hosting subscriptions, and marketing services. The company leverages partnerships with technology providers like Reflex-eshop CMS. Growth indicators include active marketing tools and a focus on strategic marketing services.

Security posture

The security posture of the website is moderate to good. HTTPS is properly implemented, and Google reCAPTCHA protects user input forms, reducing spam and automated abuse. The site includes a GDPR-compliant cookie consent mechanism, demonstrating awareness of privacy regulations. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security limits protection against common web attacks like clickjacking and content injection. No explicit security or incident response policies are published, which could hinder transparency and readiness in case of security incidents. The use of third-party scripts (Google Analytics, Smartlook) introduces some risk but is common in the industry. Overall, the site follows basic security best practices but would benefit from enhanced header configurations and documented security policies.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to harden the website against common attacks.
  2. Publish a dedicated security policy and incident response contact information to improve transparency and preparedness.
  3. Conduct regular audits of third-party scripts and dependencies to identify and mitigate potential vulnerabilities.
  4. Enhance website accessibility features to comply with standards and improve user experience for all visitors.
  5. Maintain and update privacy and cookie policies regularly to ensure ongoing GDPR compliance and user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
eStudio.cz
Description
Komplexní tvorba webových stránek od analýzy přes návrh, realizaci až po údržbu www a propagaci Vašich internetových stránek či eshopu.
Key services
Strategický marketing, Online marketing, Úspěšné weby, Ziskové e-shopy, Spolehlivý webhosting, Propojení s IS
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, jQuery, Swiper.js, Google Maps API, Google reCAPTCHA, Google Tag Manager, Google Analytics, Smartlook, FontAwesome, Modernizr
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Google reCAPTCHA on forms
  • Cookie consent mechanism
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Smartlook
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Smartlook, Samba.ai pixel
Marketing tools
Smartlook
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 and professional design.
  2. No WHOIS data available, which is unusual and may indicate privacy protection or domain registration issues.
  3. Strong presence of GDPR and cookie consent mechanisms.
  4. Multiple client references and long-term client retention indicate business stability.
  5. Use of modern web technologies and analytics tools.
  6. No explicit security headers detected; room for improvement.
  7. No visible security or incident response policies.
  8. No terms of service page found.
  9. Contact information is clearly presented with email, phone, and contact form.
Technical notes

Notes

The website is built on a modern technology stack with HTML5, CSS3, and JavaScript libraries such as jQuery and Swiper.js for interactive elements. It integrates Google services including Maps API, reCAPTCHA, Tag Manager, and Analytics, indicating a mature digital marketing infrastructure. The CMS platform used is Reflex-eshop, specialized for e-commerce and web content management. Performance is moderate, with potential optimization opportunities in loading speed and resource management. Mobile optimization is good, ensuring usability across devices. Accessibility is basic, suggesting room for improvement in compliance with accessibility standards. The site uses asynchronous loading for scripts to improve performance. Overall, the technical implementation supports the business goals but could benefit from modernization in security and accessibility.
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. 49/100High35 findingsView report
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