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Security report for rentalcars.com

Transportation · N/a

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

73/100

Risk levelMedium

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

The website www.rentalcars.com is currently inaccessible due to an AWS WAF security challenge page requiring CAPTCHA verification. This blocks access to the actual website content, preventing a full analysis of business, technical, and security details. Rentalcars.com is known as a global car rental booking platform offering vehicle rental services worldwide. However, the lack of accessible content and WHOIS data limits verification of domain legitimacy and business details. The technical infrastructure includes AWS WAF for security, but the blocking mechanism restricts performance and security assessment. The security posture cannot be fully evaluated due to the blocked content, but the presence of a WAF indicates some level of protection. Overall, the site scores low on AI evaluation due to inaccessibility and missing data, with recommendations to resolve WAF challenges for full analysis and to ensure transparency in WHOIS data.

Scanned

This is an earlier scan of rentalcars.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
50/ 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

6 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 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

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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

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

Keep watching rentalcars.com

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.

Daily monitoring

Recommended

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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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Full report

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
35
Email security
85
DNS health
85
Network security
100
GDPR outside view
50
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

Rentalcars.com operates as a major online car rental aggregator targeting a broad audience seeking vehicle rentals globally. The business model focuses on providing price comparison and booking services for rental cars. The company likely holds a large market position in the transportation sector. Due to the blocked content and missing WHOIS data, detailed insights into revenue streams, partnerships, and growth indicators are unavailable. The platform relies on AWS infrastructure for hosting and security. Strategic partnerships and subsidiary information could not be identified from the current data.

Security posture

The website employs AWS WAF with CAPTCHA challenges to mitigate automated attacks and bots, indicating a proactive security approach. However, the blocking of content limits the ability to assess security headers, SSL configuration, and vulnerability exposure. No privacy or cookie policies were detected, which may indicate compliance gaps. Incident response and vulnerability disclosure information are not available. The security score is low due to inaccessible content and missing data, but the use of WAF is a positive indicator. Recommendations include improving transparency, publishing security policies, and enabling access for security assessments.

Recommendations

  1. Resolve or bypass the AWS WAF CAPTCHA challenge to allow full website content access for comprehensive analysis.
  2. Publish clear privacy, cookie, and terms of service policies to improve compliance and user trust.
  3. Provide visible contact information and business details on the website to enhance credibility.
  4. Ensure WHOIS data is publicly available and accurate to improve domain trustworthiness.
  5. Implement and document security best practices including security headers, SSL configuration, and incident response procedures.
Site observations

Automated reading of the public site. Ratings are indicative.

Generic detected. Page is a security challenge with CAPTCHA from AWS WAF, blocking access to actual website content. These observations may be incomplete. For a fuller analysis, contact guard@offseq.com.

Business

Description
The website is a car rental service platform, targeting customers seeking vehicle rentals worldwide. It offers online booking and comparison of rental cars.
Key services
Car rental booking, Price comparison, Vehicle selection

Technology

Stack
JavaScript, AWS WAF
Platforms
Web

Security

Observed score
25/100

Analytics and tracking

Site quality

Key observations

  1. Website content is blocked behind an AWS WAF CAPTCHA challenge.
  2. No WHOIS data available from the provided raw output.
  3. No privacy, cookie, or terms of service policies detected in the provided HTML.
  4. No contact information or business identifiers found in the accessible content.
  5. No forms or input fields detected due to blocked content.
  6. External scripts are related to AWS WAF CAPTCHA services.
  7. No social media or external business links found in the accessible content.
  8. Website title indicates a human verification page, not the actual homepage content.
Technical notes

Notes

The website uses JavaScript and AWS WAF services for security and CAPTCHA challenges. Hosting is on Amazon AWS infrastructure. No CMS or frameworks were detected due to blocked content. Performance, mobile optimization, accessibility, and SEO cannot be assessed. External scripts are related to AWS WAF CAPTCHA services. The site currently suffers from technical limitations due to the security challenge preventing content access, which impacts user experience and analysis capabilities. Modernization opportunities include improving transparency and reducing friction caused by security mechanisms.
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

Earlier scans of this domain

  1. 73/100 +3Medium27 findingsView report
  2. 70/100Medium23 findingsView report
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