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Security report for hertz.co.uk

The Hertz Corporation · Transportation · United Kingdom

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

Security score

73/100

Risk levelMedium

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

The Hertz Corporation operates a comprehensive car and van rental service platform targeting customers primarily in the UK and worldwide. The website offers a broad range of services including daily car hire, electric vehicles, long-term business rentals, and van hire, supported by loyalty programs such as Gold Plus Rewards. The site is professionally designed with good content quality and clear navigation, optimized for mobile devices. Technically, the platform leverages modern JavaScript frameworks, Google Tag Manager, Google Analytics, and Stripe for payments, alongside security tools like Google reCAPTCHA Enterprise and a cookie consent mechanism powered by Securiti.ai. Security posture is strong with HTTPS enforced and no visible vulnerabilities, although explicit security headers could be improved. Privacy compliance is well addressed with a comprehensive privacy policy and cookie consent banner. WHOIS data for the subdomain queried is unavailable due to Nominet rules, but the main domain is legitimate and consistent with the business. Overall, the website demonstrates a mature digital presence with robust security and privacy practices.

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 hertz.co.uk

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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
72
Security headers
35
Email security
70
DNS health
70
Network security
100
GDPR outside view
88
Average
73

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

Hertz is a global leader in the transportation rental sector, with a strong market position supported by extensive international operations. The business model focuses on direct online bookings, loyalty rewards, and diversified rental options including electric vehicles and business rentals. The website's content and navigation cater to both consumer and business segments, reflecting a broad target audience. The use of multiple country-specific domains and alternate hreflang tags indicates a global localization strategy. The company leverages partnerships with payment processors and analytics providers to enhance customer experience and operational efficiency. Growth indicators include active special offers and business hire services. The absence of direct contact emails or phone numbers on the reservation page suggests a preference for controlled customer support channels.

Security posture

The website exhibits a strong security posture with HTTPS enforced site-wide, integration of Google reCAPTCHA Enterprise to mitigate bot traffic, and a cookie consent mechanism aligned with GDPR requirements. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, explicit security headers such as X-Frame-Options and X-Content-Type-Options are not clearly present and should be verified or implemented. The lack of a published security policy or incident response contact limits transparency in security governance. No vulnerability disclosure program or security.txt file was found, which could enhance trust and facilitate responsible vulnerability reporting. Overall, the site aligns well with industry best practices but could improve in formalizing security communication and headers.

Recommendations

  1. Implement and verify explicit security headers including X-Frame-Options and X-Content-Type-Options to enhance protection against clickjacking and MIME sniffing.
  2. Publish a dedicated security policy and provide clear incident response contact information to improve transparency and trust.
  3. Establish a vulnerability disclosure program and publish a security.txt file to encourage responsible reporting and improve security posture.
  4. Enhance accessibility features to meet compliance standards and improve user experience for all users.
  5. Regularly audit third-party scripts and dependencies to identify and mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
The Hertz Corporation
Description
Book car hire and van hire across the UK and worldwide with Hertz. Our Best Rates Guarantee assures you receive the best rates when you book directly with Hertz.
Key services
Daily Car Hire, Electric Vehicles, Long Term Business Car Hire, Van Hire, Special Offers, Online Check-In, Gold Plus Rewards
Content quality
good
Branding
consistent

Technology

Stack
RequireJS, Google Tag Manager, Google Analytics, Google reCAPTCHA Enterprise, Stripe.js, MapQuest SDK, Securiti.ai Consent SDK, DoubleClick for Publishers, JavaScript, CSS3, HTML5
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA Enterprise for bot protection
  • Cookie consent with opt-in mechanism
  • No exposed sensitive data in HTML
  • Use of secure payment library (Stripe.js)

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google DoubleClick
Marketing tools
Securiti.ai Consent SDK
Transparency
good

Site quality

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

Key observations

  1. Website uses HTTPS with strong security practices
  2. Comprehensive cookie consent and privacy policy present
  3. No direct contact emails or phone numbers found on the reservation page; contact via support pages
  4. Use of multiple Google services for analytics and tag management
  5. No visible security.txt or vulnerability disclosure policy
  6. WHOIS data for subdomain query is invalid but main domain is legitimate
  7. Website content is rich and professionally designed
  8. Mobile optimization is good with responsive design
  9. No WAF or blocking detected
Technical notes

Notes

The website uses a modern JavaScript-based front-end architecture with RequireJS for module loading, Google Tag Manager and Analytics for tracking, Stripe.js for payment processing, and MapQuest SDK for mapping services. The presence of Securiti.ai consent SDK indicates advanced cookie and privacy management. The site is served over HTTPS with good SSL configuration. Performance is moderate with room for optimization, particularly in loading third-party scripts. Mobile optimization is good with responsive design and appropriate media queries. Accessibility is basic and could be improved. SEO is well addressed with proper meta tags, canonical links, and hreflang attributes for internationalization. No CMS was explicitly detected. Hosting provider details are not evident from the content. Overall, the technical infrastructure supports a robust and scalable user experience.
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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