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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 Republic-based small technology service provider specializing in comprehensive web design, e-commerce solutions, online marketing, and reliable web hosting. The company emphasizes long-term client relationships and offers strategic marketing and integration with information systems. Their market position is supported by over 90% client retention beyond nine years, indicating strong customer satisfaction and business stability. The website content is professionally presented, targeting businesses seeking digital presence and growth through modern online tools. Technically, the website employs a modern technology stack including Google Tag Manager, Google Analytics, reCAPTCHA, Swiper.js, and Smartlook for session recording. It is built on the Reflex-eshop CMS platform, optimized for mobile devices, and includes GDPR-compliant cookie consent mechanisms. Performance is moderate with good SEO and accessibility basics. Security posture is solid with HTTPS enforced and anti-bot measures on forms, but lacks advanced security headers and published security policies. No vulnerabilities or exposed sensitive data were detected. Privacy compliance is good with clear cookie consent and a privacy policy page. Business credibility is supported by clear contact information, client references, and professional content. Overall, the website presents a trustworthy and professional digital presence with room for improvement in security headers and transparency around incident response. The absence of WHOIS data reduces domain trust slightly but does not detract from the business legitimacy based on website content.

Scanned

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

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

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Full report

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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 in the technology and e-commerce sectors, providing web design, e-shop development, online marketing, and web hosting services primarily to Czech businesses. Their competitive advantage lies in long-term client retention and a comprehensive service offering that includes strategic marketing and integration with information systems. The business model is service-oriented with revenue streams from web projects, hosting, and marketing campaigns. Target customers are SMEs and enterprises seeking to enhance their online presence and sales. The company leverages partnerships with Reflex-eshop for platform technology. Growth indicators include active client references and ongoing marketing efforts. Strategic observations suggest a focus on quality, client collaboration, and technology adoption to maintain market position.

Security posture

The website demonstrates a mature security posture with mandatory HTTPS, use of Google reCAPTCHA to protect forms, and cookie consent mechanisms aligned with GDPR. However, it lacks several recommended HTTP security headers such as Content Security Policy, HSTS, and X-Content-Type-Options, which could enhance protection against common web attacks. No security or incident response policies are publicly available, indicating a gap in transparency and preparedness communication. No vulnerabilities or sensitive data exposures were found in the HTML content. The use of third-party scripts like Smartlook and Google Analytics is standard but requires ongoing monitoring for security risks. Overall, the site is secure for typical business use but could improve in advanced security practices and policy disclosures.

Recommendations

  1. Implement HTTP security headers including Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Content-Type-Options to strengthen web security.
  2. Publish a dedicated security policy and incident response page to improve transparency and preparedness communication.
  3. Add a security.txt file at the root domain to facilitate vulnerability disclosure and responsible reporting.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance accessibility features and conduct periodic security assessments to maintain compliance and security posture.
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
Google Tag Manager, Google Analytics (gtag.js), Google reCAPTCHA v2, Swiper.js, jQuery, Modernizr, Smartlook (session recording), Google Maps API
Frameworks
Reflex-eshop (custom CMS/e-commerce platform)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Google reCAPTCHA on forms
  • Cookie consent banner with category control
  • 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, indicating possible privacy protection or registry issue.
  3. Strong GDPR and cookie compliance with user 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 visible security headers detected; opportunity for improvement.
  7. No explicit security or incident response policies published.
  8. Contact information is clearly presented with multiple channels.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on the Reflex-eshop CMS platform, utilizing modern JavaScript libraries such as Swiper.js for UI components and Modernizr for feature detection. It integrates Google services including Tag Manager, Analytics, Maps API, and reCAPTCHA for security and tracking. The site uses asynchronous loading for scripts to optimize performance. Mobile optimization is good with responsive design elements. SEO is supported by meta tags and structured navigation. However, no advanced performance optimization techniques like lazy loading or CDN usage were explicitly detected. The absence of security headers is a technical debt that should be addressed. Overall, the technical infrastructure is solid but could benefit from enhanced security and performance tuning.
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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