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Security report for sixt.com.au

SIXT · Transportation · Australia

Low risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

77/100

Risk levelLow

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

SIXT Australia operates a large vehicle rental network with over 163 locations and a fleet exceeding 16,000 vehicles, offering a broad range of rental options including compact cars, luxury vehicles, electric cars, SUVs, trucks, and commercial vehicles. The company targets both consumer and business markets, providing premium mobility solutions and leveraging partnerships such as with Velocity and NRMA Rewards. The website is professionally designed, mobile-optimized, and provides clear navigation and booking functionality. Technically, the site uses modern frameworks like React and integrates consent management and analytics tools, indicating a mature digital infrastructure. Security posture is good with HTTPS enforced and no visible vulnerabilities, though explicit security policies and incident response information are not publicly disclosed. WHOIS data is privacy protected but consistent with legitimate commercial use. Overall, the site demonstrates strong business credibility and digital maturity with room for enhanced transparency in security disclosures.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 100 · Medium
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

3 findings rated critical or high. Fix these first.

  1. 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 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

  3. 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

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

Keep watching sixt.com.au

This scan found 18 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
82
Security headers
70
Email security
70
DNS health
70
Network security
100
GDPR outside view
68
Average
77

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

SIXT holds a strong market position as a global and Australian leader in vehicle rental services, with a diversified fleet and extensive branch network. Their business model combines direct consumer rentals with corporate mobility solutions and long-term leasing. Revenue streams likely include daily rentals, corporate contracts, and partnerships. The company actively engages customers through loyalty programs and partnerships, enhancing customer retention. The website reflects a well-established brand with consistent messaging and trust signals such as testimonials and social media presence. Growth indicators include promotional offers and business-specific services. The partnership ecosystem includes airlines and auto clubs, supporting cross-promotional opportunities.

Security posture

The website demonstrates a solid security foundation with HTTPS and consent management for privacy compliance. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of a publicly available security policy, incident response page, or vulnerability disclosure program suggests opportunities for improvement in transparency and readiness. The site uses third-party analytics and tracking tools responsibly with user consent. Overall, the security maturity is good but could be enhanced by publishing formal security documentation and establishing clear incident response channels.

Recommendations

  1. Publish a dedicated security policy and incident response information on the website to improve transparency and trust.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting of security issues.
  3. Enhance HTTP security headers such as Content Security Policy (CSP), Strict-Transport-Security (HSTS), and X-Frame-Options if not already configured.
  4. Provide direct company contact emails and phone numbers for customer support and security reporting to improve accessibility.
  5. Regularly review and update privacy and cookie policies to maintain compliance with evolving regulations and best practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SIXT
Description
SIXT Australia is a network of vehicle rental experts with more than 163 locations and over 16,000 vehicles nationwide. They offer a premium car hire fleet including compact passenger and luxury cars, electric vehicles, SUVs, utes, vans, buses, moving trucks and trucks. Customers can visit branches or book online.
Key services
Car hire, Truck and van rental, Luxury and electric vehicle rental, Business mobility solutions, Long-term leasing
Content quality
excellent
Branding
consistent

Technology

Stack
React, JavaScript, Usercentrics (consent management), Google Tag Manager, Instana (performance monitoring), Statsig (feature flags/experimentation)
Frameworks
React
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager, Instana, Statsig
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Instana, Statsig
Marketing tools
Usercentrics
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professionally presented and relevant to car rental services in Australia.
  3. Strong presence of social media and partner links indicating active business operations.
  4. Privacy and cookie policies are present with consent management implemented.
  5. No direct contact emails or phone numbers found in the HTML; contact is via contact page/form.
  6. No explicit security policy or incident response information publicly available.
  7. Modern tech stack with React and third-party analytics and consent tools.
  8. No suspicious or malicious content detected.
  9. WHOIS data is privacy protected but consistent with legitimate commercial use.
Technical notes

Notes

The website is built on a modern React framework with extensive use of JavaScript and third-party libraries for consent management (Usercentrics), analytics (Google Tag Manager, Instana, Statsig), and performance monitoring. The site is mobile-optimized with responsive design and good accessibility features. Preloading of fonts and scripts indicates performance optimization efforts. No CMS was explicitly detected, suggesting a custom or headless architecture. Hosting provider details are not disclosed in the HTML. The site shows moderate to fast performance with good SEO practices including meta tags and structured data. Technical risks are minimal but ongoing monitoring of third-party dependencies is recommended.
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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