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Security report for zdn.cz

Internet Info, s.r.o. · Healthcare · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view and SSL/TLS.

Security score

67/100

Risk levelMedium

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

The website zdravi.euro.cz is a Czech-language specialized media portal focused on healthcare and medical topics. It serves healthcare professionals, doctors, and the general public by providing expert articles and news related to medicine. The site is part of the Internet Info, s.r.o. group, a known media company in the Czech Republic. The business model revolves around content publishing and advertising revenue. Technically, the site employs modern web technologies including Google Analytics, Google Tag Manager, Gemius analytics, and header bidding via Prebid.js. It uses HTTPS and has implemented a cookie consent mechanism compliant with GDPR principles, though no explicit privacy policy page was found in the provided content. Security posture is moderate with HTTPS and error monitoring via Sentry, but lacks visible security headers and published security policies. WHOIS data is not publicly available, indicating privacy protection, which is common but reduces transparency. Overall, the site is professionally designed, mobile-optimized, and trustworthy for its target audience.

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

6 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

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Google APIs, Google Ads

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching zdn.cz

This scan found 21 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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  • 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
75
Security headers
60
Email security
75
DNS health
80
Network security
100
GDPR outside view
10
Average
67

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 zdn.cz, from OffSeq Breach.

Total records
4
Employees
0
Customers
4
Third parties
0
Weak passwords
50%

2 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 zdn.cz.

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

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 positions itself as a key information source in the healthcare media sector in the Czech Republic. Its competitive advantage lies in specialized content tailored for healthcare workers and the public. Revenue streams likely include advertising and sponsored content. The target customers are healthcare professionals and interested laypersons. The site integrates with multiple advertising and analytics partners such as Google and Seznam.cz, indicating a mature partnership ecosystem. Growth indicators include the use of advanced ad technologies and consent management. Strategic observations suggest the site maintains a professional media presence but could improve transparency by publishing privacy and security policies.

Security posture

The website demonstrates a moderate security maturity level. HTTPS is enforced, and error monitoring is implemented via Sentry, which helps in proactive issue detection. However, the absence of visible security headers such as Content Security Policy, HSTS, and X-Frame-Options is a gap. No security.txt or vulnerability disclosure information was found, limiting external security communication. The cookie consent mechanism indicates GDPR awareness but lacks a linked privacy policy page in the analyzed content. No exposed sensitive data or vulnerable libraries were detected. Incident response readiness and security culture indicators are not publicly visible. Overall, the site is secure for general use but could enhance its security posture by adopting best practices and transparency.

Recommendations

  1. Publish a comprehensive privacy policy page linked prominently on the site.
  2. Implement and verify security headers including CSP, HSTS, X-Frame-Options, and X-XSS-Protection.
  3. Create and publish a security.txt file to facilitate vulnerability disclosures.
  4. Enhance accessibility features to improve compliance and user experience.
  5. Increase transparency by providing registrant and business contact information.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Internet Info, s.r.o.
Description
Odborné webové stránky týdeníku Zdravotnictví a medicína. Tento server je určen všem pracovníkům ve zdravotnictví, lékařům i široké veřejnosti.
Key services
Healthcare news articles, Medical information, Advertising
Content quality
good
Branding
consistent

Technology

Stack
Google Analytics, Google Tag Manager, Gemius (analytics), Prebid.js (header bidding), Didomi (consent management), Sentry (error tracking), Google Adsense, Seznam.cz recommendation scripts
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Consent management implemented
  • Error monitoring with Sentry

Analytics and tracking

Services
Google Analytics, Gemius, Google Tag Manager, Seznam.cz analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Google Adsense, CPEX, Seznam SSP
Tracking pixels
Gemius, Seznam recommendation pixel
Marketing tools
CPEX advertising package
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is focused on healthcare and medical news in Czech language.
  3. No explicit contact emails or phone numbers found on the homepage.
  4. Cookie consent banner is implemented with detailed privacy information.
  5. No visible privacy policy or terms of service pages linked in the provided content.
  6. Multiple third-party analytics and advertising scripts are used.
  7. No security.txt or vulnerability disclosure information found.
  8. WHOIS data is not publicly available, indicating privacy protection.
  9. Website uses modern tracking and advertising technologies common in media sites.
  10. No signs of adult or NSFW content detected.
Technical notes

Notes

The website uses a modern technology stack with multiple third-party analytics and advertising scripts, including Google Analytics, Gemius, Prebid.js, and Seznam.cz services. It employs asynchronous script loading and consent management via Didomi, indicating attention to performance and privacy. The site is mobile-optimized and uses responsive design. However, no CMS or hosting provider was explicitly identified. Performance is moderate, with room for improvement in loading speed and accessibility. Technical debt appears low, but the lack of security headers and privacy policy pages suggests areas for modernization. Overall, the infrastructure supports a professional media portal but could benefit from enhanced security and compliance 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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