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Security report for thrifty.lu

The Hertz Corporation · Transportation · Luxembourg

Low risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

76/100

Risk levelLow

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

Thrifty Car Rental, a brand under The Hertz Corporation, operates a comprehensive car rental service across Europe with over 400 locations. The website offers a user-friendly booking platform, extensive fleet options including electric vehicles, and promotional offers targeting cost-conscious travelers. The company leverages its strong brand recognition and parent company backing to maintain a competitive market position. Technically, the website employs modern web technologies such as Bootstrap, jQuery, and Google Tag Manager, ensuring a responsive and functional user experience. Privacy and cookie consent mechanisms are well implemented, reflecting compliance with GDPR and related regulations. Security posture is solid with HTTPS enforcement and CSRF protections, though some security headers and explicit vulnerability disclosures are absent. Overall, the site presents a professional and trustworthy digital presence aligned with an established transportation business.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
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 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';…

  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

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

Keep watching thrifty.lu

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
77
Security headers
35
Email security
70
DNS health
85
Network security
100
GDPR outside view
88
Average
76

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

The business is positioned as a major player in the European car rental market, leveraging the global Hertz brand. Its business model focuses on providing flexible, affordable car rentals with a wide geographic footprint and diverse vehicle options. Revenue streams likely include rental fees, surcharges for young drivers, and value-added services such as fuel purchase options. The company targets both leisure and business travelers, emphasizing convenience and cost savings. Partnerships and sister brands like Dollar Car Rental expand its market reach. The website's multilingual and multi-country support indicates a strategic approach to international customer engagement.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and secure form handling via CSRF tokens. Cookie consent is managed through a third-party platform, providing opt-in mechanisms and compliance with privacy laws. No sensitive data exposure or vulnerable libraries were detected in the HTML content. However, the absence of explicit security headers such as Content Security Policy and lack of a published vulnerability disclosure or security.txt page represent areas for improvement. Incident response information is partially available via a Notice of Data Incident document, but direct security contact channels are not clearly provided. Overall, the security measures are adequate but could be enhanced to meet best practices and improve transparency.

Recommendations

  1. Implement security headers including Content Security Policy, HSTS, and X-Frame-Options to strengthen defense-in-depth.
  2. Publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting and improve trust.
  3. Provide explicit security incident contact information (e.g., security@ or abuse@ email addresses) on the website.
  4. Enhance accessibility features to improve compliance with standards and user experience for all visitors.
  5. Regularly audit third-party scripts and dependencies to ensure no vulnerable libraries are included.

Contact details published on the site

Addresses
Legal name
The Hertz Corporation
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
The Hertz Corporation
Description
Car rental made easy with Thrifty Car Rental. We have an extensive range of cars throughout Europe. For the best rental rates book online today.
Key services
Car rental, Electric vehicle rental, Flexible rental durations, Promotional offers
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Bootstrap 5, Slick Carousel, jQuery UI, Google Tag Manager, Securiti.ai cookie consent
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in mechanism
  • No exposed sensitive data in HTML
  • Use of CSRF tokens in forms

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Securiti.ai cookie consent
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 rich content and booking functionality
  2. Strong branding consistent with The Hertz Corporation
  3. Comprehensive cookie consent and privacy policy mechanisms implemented
  4. No WHOIS data available, limiting domain registration trust analysis
  5. No explicit security.txt or vulnerability disclosure found
  6. Multiple external trusted domains used for scripts and assets
  7. Social media presence on Facebook, Twitter, Instagram
  8. Multiple language and country options available
  9. Booking forms use CSRF tokens and hidden fields for security
Technical notes

Notes

The website uses a modern front-end stack with Bootstrap 5 and jQuery UI components, ensuring responsive design and interactive elements. Google Tag Manager is integrated for analytics and marketing tracking. Cookie consent is managed by Securiti.ai, indicating attention to privacy compliance. The site loads multiple external resources from reputable CDNs, contributing to performance and reliability. However, no CMS or hosting provider information is explicitly detected. Performance is moderate with some room for optimization. The site supports multiple languages and countries, reflecting a scalable infrastructure. Technical debt appears low, but security header implementation and accessibility enhancements are 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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