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Security report for lekari-online.cz

LekariOnline.CZ · Healthcare · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

56/100

Risk levelMedium

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

Lékaři-online.cz is a well-established Czech healthcare portal providing a comprehensive directory of doctors, clinics, and medical procedures, along with patient reviews. The platform targets patients and healthcare seekers in the Czech Republic, offering a trusted resource since 2006. The website demonstrates consistent branding and good content quality, supporting its position as a reputable healthcare information source. Technically, the site employs modern web technologies including jQuery, Foundation framework, and integrates Google Analytics and advertising services, ensuring a functional and responsive user experience. Security posture is solid with HTTPS enforced and cookie consent mechanisms in place, though there is room for improvement in security headers and published security policies. The absence of WHOIS data suggests privacy protection, which is common and justified for this type of healthcare directory. Overall, the site is professional, trustworthy, and compliant with GDPR requirements.

Scanned

NIS2 and GDPR posture

GDPR outside view
48/ 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

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 Cookie Policy found

      GDPR requires clear information about cookie usage

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

  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';…

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Keep watching lekari-online.cz

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  • TLS certificates and expiry
  • DNS records
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  • 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
72
Security headers
20
Email security
75
DNS health
80
Network security
40
GDPR outside view
48
Average
56

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 lekari-online.cz, from OffSeq Breach.

Total records
63
Employees
0
Customers
63
Third parties
0
Weak passwords
30%

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 lekari-online.cz.

Select it in the checkout above.

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 business operates in the healthcare sector as an important entity, focusing on providing an online platform for patients to find doctors and clinics and read reviews. Its business model revolves around advertising revenue and possibly lead generation for healthcare providers. The company has a strong market presence in the Czech Republic with a large database of medical professionals and procedures. The platform's longevity since 2006 indicates stable operations and market acceptance. Partnerships with advertising networks like Google AdSense and Sklik support monetization. The lack of direct contact information on the homepage suggests a focus on user engagement through the platform rather than direct business inquiries. Strategic growth could involve expanding services or partnerships with healthcare providers.

Security posture

The website maintains a good security posture with HTTPS enabled and no visible exposure of sensitive data. Cookie consent scripts indicate compliance with privacy regulations. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options is a gap that could be addressed to enhance protection against common web attacks. No incident response or security policy information is published, which limits transparency in security management. There are no detected vulnerabilities or malware indicators. The site would benefit from publishing a security.txt file and incident response contacts to improve security culture and readiness. Overall, the security maturity is moderate with room for improvement in formal policies and headers.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a clear Terms of Service page to complement existing privacy and cookie policies.
  3. Add incident response and security policy information publicly to enhance transparency and trust.
  4. Consider deploying a security.txt file to facilitate vulnerability disclosure and improve security posture.
  5. Enhance accessibility features to improve compliance and user experience for all users.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
LekariOnline.CZ
Description
Lékaři online - Portál zdraví - Vyhledejte lékaře, doktory, zubaře, chirurgy - zákroky z ortopedie, oftalmologie, stomatologie, léčby neplodnosti.
Key services
Doctor search, Clinic listings, Patient reviews, Medical procedure information
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Foundation-sites, Google Tag Manager, Google Analytics, Google Ads (AdSense, GPT), Vanilla LazyLoad
Frameworks
Foundation
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 secure cookies consent mechanism

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google AdSense, Sklik (imedia.cz)
Transparency
basic

Site quality

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

Key observations

  1. Website is a Czech healthcare directory and review portal.
  2. Content is in Czech language and well structured.
  3. No direct contact emails or phone numbers found on homepage or footer.
  4. Privacy and cookie policies are present and GDPR compliant.
  5. No explicit security or incident response policies published.
  6. Advertising is present via Google and Sklik networks.
  7. No WHOIS data available, indicating privacy protection or registry data unavailability.
  8. Website uses modern JavaScript libraries and frameworks.
  9. No signs of malware or phishing detected.
  10. No adult or questionable content detected.
Technical notes

Notes

The website uses a modern technology stack with jQuery and Foundation framework for responsive design. Google Tag Manager and Google Analytics are integrated for tracking and analytics. Advertising is managed through Google AdSense and Sklik networks. The site loads scripts asynchronously and uses lazy loading for images, improving performance. SEO is supported by proper meta tags and Open Graph data. The site is mobile optimized with responsive design elements. No CMS is explicitly detected, suggesting a custom or proprietary platform. Hosting provider details are not available. Performance is moderate with potential for optimization. Accessibility is basic but could be improved. Overall, the technical infrastructure supports a stable and user-friendly experience.
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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