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Security report for emeraldclub.com

National Car Rental · Transportation · United States

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

72/100

Risk levelMedium

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

National Car Rental is a well-established enterprise car rental service provider with a global presence, offering services at over 1,500 locations worldwide. The company operates a loyalty program called Emerald Club, providing benefits such as counter bypass and rewards. The website is professionally designed, mobile-optimized, and rich in content, reflecting a mature digital presence. Technically, the site leverages Adobe Experience Manager, Google Tag Manager, and other modern web technologies, ensuring good performance and SEO. Security posture is strong with HTTPS, security headers, and secure forms, although explicit security policies and incident response contacts are not published. Privacy compliance is robust with clear privacy and cookie policies and consent mechanisms. WHOIS data is unavailable, likely due to privacy protection, but the website content and structured data confirm legitimacy. Overall, the site scores high on content quality, technical implementation, security, privacy, and business credibility.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

4 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. 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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching emeraldclub.com

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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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
65
Security headers
25
Email security
85
DNS health
85
Network security
100
GDPR outside view
73
Average
72

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

National Car Rental holds a strong market position in the transportation sector, targeting business and leisure travelers. Its business model centers on car rental services enhanced by a loyalty program and mobile app. The company benefits from a large enterprise scale and a global footprint. Partnerships with promotional and privacy service providers are evident. The website's comprehensive content and clear navigation support customer engagement and retention. The absence of WHOIS data is a minor anomaly but does not detract from the company's credibility. The company likely generates revenue through rentals, loyalty incentives, and business programs.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, multiple security headers, and use of reCaptcha to protect forms. Cookie consent is managed via OneTrust, indicating GDPR compliance. No vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of a published security policy or incident response contact limits transparency. The site would benefit from publishing a vulnerability disclosure policy or security.txt file to enhance trust and readiness. Overall, the security measures align well with industry best practices for a large enterprise.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and compliance.
  2. Add an incident response contact email or form to facilitate reporting of security issues.
  3. Implement and publish a vulnerability disclosure or security.txt file to encourage responsible reporting.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance transparency by providing data retention policies and more detailed privacy compliance information.

Contact details published on the site

Addresses
Legal name
National Car Rental
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
National Car Rental
Description
National Car Rental offers fast and convenient car rental services at over 1,500 locations worldwide. They provide a loyalty program called Emerald Club with benefits such as counter bypass, vehicle choice, and rewards towards free rental days.
Key services
Car rental reservations, Emerald Club loyalty program, Special offers and promotions, Mobile app for reservations and account management
Content quality
excellent
Branding
consistent

Technology

Stack
Adobe Experience Manager (AEM), Google Tag Manager, Google reCaptcha, IBM Payment Processor, OneTrust Cookie Consent, React (ReactModal), Polyfill.js
Frameworks
Adobe Experience Manager
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of reCaptcha for forms
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Secure form inputs

Analytics and tracking

Services
Google Analytics (via GTM), Adobe mPulse
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Adobe Launch, mPulse
Marketing tools
Adobe Launch, OneTrust Cookie Consent
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 rich content and interactive features.
  2. Strong branding and consistent corporate identity.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. Multiple contact methods including phone and physical address provided.
  5. Use of modern web technologies and analytics tools.
  6. No signs of phishing, malware, or suspicious redirects.
  7. WHOIS data unavailable, but no other red flags detected.
Technical notes

Notes

The website is built on Adobe Experience Manager, a robust enterprise CMS, ensuring scalability and content management efficiency. It uses Google Tag Manager and Adobe Launch for analytics and marketing, and integrates IBM payment processing. The site is mobile-optimized with responsive design and accessibility features. Performance is optimized with preloading fonts and asynchronous script loading. Hosting appears to leverage Akamai CDN for global delivery. The technical stack is modern and well-maintained, supporting a fast and reliable user experience. Opportunities exist to further enhance security transparency and data protection documentation.
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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