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Security report for sixtleasing.cz

Sixt Leasing · Transportation · Czech Republic

High risk. 10 critical or high findings in GDPR outside view, Security headers and 3 other checks.

Security score

46/100

Risk levelHigh

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

Sixtleasing.cz is a professional website offering premium operational leasing and fleet management services primarily targeting corporate clients in the Czech Republic. The company is part of the larger Sixt group, a well-known international vehicle rental and leasing brand. The website provides comprehensive information about leasing products, services, and customer support, with clear navigation and a modern design. Technically, the site uses common JavaScript libraries such as jQuery and Slick Carousel, integrates Google Analytics and LinkedIn tracking, and implements GDPR-compliant cookie consent mechanisms. Security posture is solid with HTTPS enforced and no visible vulnerabilities, though additional security headers and published security policies could enhance trust. The absence of WHOIS data reduces domain transparency but does not significantly impact the overall credibility given the strong brand presence and professional content. Overall, the site is well-structured, compliant, and trustworthy for its business purpose.

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

10 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 sixtleasing.cz

This scan found 22 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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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
15
Email security
45
DNS health
85
Network security
20
GDPR outside view
40
Average
46

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 sixtleasing.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for sixtleasing.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

Sixtleasing.cz operates in the transportation sector, focusing on operational leasing and fleet management for businesses. Its market position is premium within the Czech market, leveraging the global Sixt brand. The business model revolves around leasing vehicles with full-service options, including financing, servicing, insurance, and assistance. The target customers are corporate fleets and business users seeking flexible mobility solutions. The website indicates a medium-sized operation with a consistent brand identity and multiple service offerings. Partnerships with Sixt.cz and integration with social media platforms support marketing and customer engagement. The company appears to have a stable market presence with growth potential through digital channels and service diversification.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and cookie consent mechanisms aligned with GDPR. No sensitive data is exposed in the HTML content, and no vulnerable libraries were detected. However, the site lacks explicit security headers such as Content-Security-Policy and X-Frame-Options, which are recommended to mitigate common web attacks. There is no published security policy or incident response information, which could be improved to enhance transparency and preparedness. No vulnerability disclosure or security.txt file is present, limiting external security collaboration. Overall, the security measures are adequate for the business type but could be strengthened to meet higher standards and regulatory expectations.

Recommendations

  1. Implement security headers including Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to enhance protection against common web vulnerabilities.
  2. Publish a clear security policy and incident response plan on the website to improve transparency and customer trust.
  3. Add a vulnerability disclosure program or security.txt file to encourage responsible reporting of security issues.
  4. Enhance accessibility features to comply with standards and improve user experience for all visitors.
  5. Regularly audit and update third-party scripts and tracking tools to minimize security risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sixt Leasing
Description
Sixtleasing nabízí bohatý výběr služeb - operativní leasing, full-service leasing, správa firemního vozového parku.
Key services
Operativní leasing, Full service leasing, Fleet management, Vehicle financing, Servisní služby, Pojištění, Silniční asistence
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Slick Carousel, Google Tag Manager, Google Analytics, LinkedIn Insight Tag, CookieConsent.js, Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Matomo (Piwik), LinkedIn Insight
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Leady
Tracking pixels
LinkedIn Insight Tag, Piwik/Matomo
Marketing tools
Leady tracking
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 no blocking or WAF challenges.
  2. Content is professionally presented and relevant to leasing services.
  3. WHOIS data is unavailable, which is unusual but not uncommon for some domains.
  4. Cookie consent and privacy policies are implemented in compliance with GDPR.
  5. Multiple social media and external links to reputable domains are present.
  6. No security policy or incident response information is published.
  7. No vulnerability disclosure or security.txt file found.
  8. Website uses modern JavaScript libraries and tracking tools.
  9. Contact information is clearly provided with phone and email.
  10. No signs of adult or inappropriate content.
Technical notes

Notes

The website uses a combination of jQuery, Slick Carousel, Bootstrap, and Google Tag Manager for functionality and analytics. It loads fonts from Google Fonts and uses asynchronous loading for analytics scripts to optimize performance. The site is mobile responsive with good navigation clarity and SEO optimization. However, no CMS or hosting provider information was detected. Performance is moderate, with opportunities to improve load times and accessibility. The technical stack is modern but could benefit from additional security and accessibility enhancements. The site structure and use of external libraries are standard for corporate websites in the leasing industry.
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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