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Security report for renatex.cz

TSC Group · Manufacturing · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, Security headers and 3 other checks.

Security score

55/100

Risk levelMedium

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

TSC Group is a large holding company based in the Czech Republic, specializing in facility management, industrial and healthcare cleaning, laundry services, technological cleaning, and paint stripping. The company operates through 12 subsidiaries, serving diverse sectors including industrial manufacturing, healthcare, administrative offices, and outdoor maintenance. Their market position is strong as the largest group in their sector within the Czech Republic, leveraging modern technologies and certifications such as ISO 50001 and EcoVadis to maintain competitive advantage. Technically, the website employs modern web technologies including Google Tag Manager, Swiper.js for UI components, and the Nette Framework for backend form validation. The site is mobile-optimized, accessible, and SEO-friendly, providing a professional user experience. Performance is moderate with asynchronous loading of scripts and responsive design. From a security perspective, the site uses HTTPS with good SSL configuration and secure form handling including reCaptcha. However, there is a lack of explicit security headers and no published security or incident response policies, which could be improved. No vulnerabilities or exposed sensitive data were detected in the content. Overall, the website is trustworthy, professional, and compliant with GDPR, featuring cookie consent mechanisms and privacy policies. The absence of WHOIS data is likely due to privacy protection and does not detract from the legitimacy of the business. Strategic recommendations include enhancing security headers, publishing security policies, and adding vulnerability disclosure information to further strengthen trust and compliance.

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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, LinkedIn, YouTube

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

  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 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 renatex.cz

This scan found 20 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
72
Security headers
30
Email security
80
DNS health
85
Network security
20
GDPR outside view
40
Average
55

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 renatex.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for renatex.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

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

TSC Group's business intelligence reveals a diversified service portfolio targeting industrial, healthcare, and administrative sectors with integrated facility management solutions. Their competitive advantage lies in combining modern technology with extensive experience, supported by certifications and strong partnerships with regional sports clubs. The holding structure allows centralized management of subsidiaries, optimizing service delivery and market reach. Growth indicators include recent acquisitions and expansion of technological capabilities such as laser cleaning and high-capacity paint stripping. The company targets business clients requiring comprehensive technical and cleaning services, positioning itself as a market leader in the Czech Republic and Slovakia.

Security posture

The security posture of TSC Group's website is mature with HTTPS enforced and secure form handling including reCaptcha. The use of Google Tag Manager is implemented asynchronously to reduce risk. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options is a gap. No incident response or security policy information is published, limiting transparency. There is no evidence of vulnerabilities or exposed sensitive data in the website content. GDPR compliance is evident through cookie consent and privacy policy. Overall, the security maturity is good but could be enhanced by publishing security policies and implementing additional HTTP security headers.

Recommendations

  1. Implement comprehensive HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a clear security policy and incident response contact information on the website.
  3. Add a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance transparency by providing detailed data retention policies and GDPR compliance documentation.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
TSC Group
Description
TSC Group is a holding company overseeing 12 subsidiaries providing a wide range of services in facility management, cleaning, laundry services, technological cleaning, paint stripping, and related technical services. They serve industrial, healthcare, administrative, and outdoor sectors using modern technologies and extensive experience.
Key services
Facility management, Cleaning services (industrial, healthcare, administrative), Laundry and rental of textiles, Technological cleaning and paint stripping, Security services, Maintenance of production equipment
Content quality
excellent
Branding
consistent

Technology

Stack
Google Tag Manager, Swiper.js, Nette Framework (form validation), Bootstrap (modal dialogs), JavaScript, CSS3, HTML5
Frameworks
Nette Framework
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Google Tag Manager asynchronously
  • Form validation with reCaptcha integration

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content and no blocking detected.
  2. WHOIS data is unavailable, indicating privacy protection or registry limitations.
  3. Strong presence of certifications and partnerships enhances trust.
  4. Comprehensive service descriptions and multiple subsidiaries listed.
  5. Use of modern web technologies and responsive design.
  6. Cookie consent and privacy policy are implemented and GDPR compliant.
  7. No explicit security policy or incident response information found.
  8. No terms of service page detected.
  9. Contact form collects personal data with GDPR consent checkbox.
  10. No exposed sensitive data or vulnerabilities detected in the HTML content.
Technical notes

Notes

The website is built using modern web technologies including HTML5, CSS3, JavaScript, and the Nette Framework for backend form validation. It uses Google Tag Manager for analytics and tracking, and Swiper.js for interactive UI components. The site is mobile responsive and optimized for accessibility and SEO. Performance is moderate with asynchronous script loading. There is no detected CMS, suggesting a custom or framework-based implementation. Hosting provider details are not disclosed. Technical risks are minimal but could be reduced by adding security headers and ensuring continuous monitoring of third-party dependencies.
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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