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Security report for lexum.cz

Síť očních klinik Lexum · Healthcare · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

61/100

Risk levelMedium

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

Síť očních klinik Lexum is a leading private healthcare provider specializing in comprehensive eye care services in the Czech Republic and Slovakia. With over 30 years of experience and more than 650,000 successful procedures, Lexum offers a wide range of ophthalmological treatments including laser eye surgery, cataract treatment, glaucoma management, and cosmetic eyelid surgery. The company operates multiple clinics across major cities, providing accessible and specialized care to a broad patient base. Their market position as the largest private eye care provider in the region is supported by contracts with all health insurance companies and a strong reputation evidenced by patient testimonials and professional certifications. Technically, the website is built on WordPress with modern technologies such as jQuery, Bootstrap, Google Tag Manager, and Facebook Pixel integrated for analytics and marketing. The site demonstrates good SEO practices with structured data (JSON-LD) and meta tags, and it is mobile-optimized with responsive design. Security posture is solid with HTTPS enforced and reCAPTCHA implemented, although some security headers are not explicitly detected. Privacy compliance is basic with cookie consent mechanisms present but lacking a clearly accessible comprehensive privacy policy. Overall, the website presents a professional and trustworthy digital presence with clear contact information, detailed service descriptions, and multiple clinic locations. The absence of WHOIS data reduces transparency but is likely due to privacy protection, which is reasonable for a healthcare provider. There are no indications of security vulnerabilities or content blocking, and the site is safe for general audiences.

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

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

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, LinkedIn, Google APIs

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

  2. 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching lexum.cz

This scan found 17 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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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
42
Security headers
95
Email security
85
DNS health
85
Network security
20
GDPR outside view
40
Average
61

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

Lexum operates in the healthcare sector focusing on ophthalmology, targeting patients requiring eye care services in the Czech Republic and Slovakia. Their business model is based on private healthcare provision with a broad service portfolio covering laser surgeries, cataract and glaucoma treatments, and other specialized eye care. The company leverages a network of clinics to maximize geographic reach and accessibility. Revenue streams likely include direct patient payments, insurance reimbursements, and possibly partnerships with health insurers. The presence of multiple social media channels and media portals indicates an active marketing and communication strategy. Growth indicators include a large number of successful procedures and a 30-year operational history. The company maintains a professional online presence with trust signals such as testimonials and verified social media accounts.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and integration of Google reCAPTCHA to protect forms from automated abuse. Cookie consent mechanisms indicate awareness of privacy regulations. However, the absence of explicit security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security suggests room for improvement. No security.txt or vulnerability disclosure policy is found, which could enhance incident response readiness. No exposed sensitive data or vulnerable libraries were detected in the HTML content. Overall, the security posture is good but could be strengthened by implementing recommended HTTP headers and publishing clear security policies.

Recommendations

  1. Publish a comprehensive and easily accessible privacy policy page detailing data processing and GDPR compliance.
  2. Implement and verify HTTP security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Create and publish a security.txt file or vulnerability disclosure policy to facilitate responsible reporting of security issues.
  4. Enhance accessibility features to meet recognized standards and improve user experience for all visitors.
  5. Increase transparency by providing WHOIS registrant information or clarifying privacy protection rationale on the website.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Síť očních klinik Lexum
Description
Poskytujeme komplexní oční péči již 30 let. Naši lékaři provedli více než 650 000 úspěšných zákroků. Zrak je ten nejdůležitější smysl každého člověka.
Key services
Laserová operace očí (laser eye surgery), Presbyopie řešení (middle age vision correction), Léčba šedého zákalu (cataract treatment), Léčba věkem podmíněné makulární degenerace (age-related macular degeneration treatment), Léčba sítnice a sklivce (retina and vitreous treatment), Léčba šilhání (strabismus treatment), Léčba zeleného zákalu (glaucoma treatment), Estetické operace očních víček (cosmetic eyelid surgery), Léčba onemocnění rohovky (corneal disease treatment), Syndrom suchého oka (dry eye syndrome treatment)
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Google Tag Manager, Google Analytics, Facebook Pixel, reCAPTCHA, Yoast SEO plugin
Frameworks
Bootstrap (navbar, modals, responsive design)
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • Use of HTTPS
  • Google reCAPTCHA integration
  • Consent management for cookies
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Google Tag Manager, Contentsquare
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Google Ads
Tracking pixels
Facebook Pixel
Transparency
good

Site quality

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

Key observations

  1. Website is a professional healthcare provider site specialized in ophthalmology.
  2. Content is comprehensive with detailed service descriptions and multiple clinic locations.
  3. Strong use of structured data (JSON-LD) and SEO best practices.
  4. No WHOIS data available, indicating privacy protection or domain not found in CZ NIC database.
  5. Good use of tracking and marketing tools with consent mechanisms.
  6. No explicit privacy or terms of service pages found in provided content.
  7. Contact information is clearly presented with multiple phone numbers, emails, and physical addresses.
  8. No security.txt or vulnerability disclosure found.
  9. No signs of WAF or content blocking.
Technical notes

Notes

The website is built on WordPress CMS with a modern tech stack including jQuery, Bootstrap for responsive design, and various analytics and marketing tools such as Google Tag Manager, Google Analytics, Facebook Pixel, and Contentsquare. The site uses Yoast SEO plugin for search engine optimization and includes structured data in JSON-LD format for enhanced search visibility. Performance is moderate with asynchronous loading of scripts and optimized images. Mobile optimization is good with responsive navigation and layout. Some technical debt is indicated by missing security headers and limited accessibility features. Hosting provider details are not explicitly found. Overall, the technical infrastructure supports a professional and functional user experience with opportunities for security and accessibility enhancements.
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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