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Security report for ebay.com.au

eBay Australia · E-commerce · Australia

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

Security score

80/100

Risk levelLow

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

eBay Australia operates as a leading online marketplace offering a wide range of products including electronics, cars, fashion, and collectibles. It serves a broad consumer base in Australia and is part of the global eBay Inc. ecosystem. The platform supports both consumer-to-consumer and business-to-consumer transactions, leveraging a mature e-commerce business model with strong brand recognition and market presence. Technically, the website employs modern web technologies such as Marko.js, client-side monitoring, and lazy loading for performance optimization. The site is well-optimized for mobile devices and accessibility, with a fast loading experience and comprehensive SEO metadata. The infrastructure appears robust, likely supported by eBay's global hosting and content delivery networks. From a security perspective, the site enforces HTTPS, implements key security headers, and monitors client-side errors. However, explicit security policies, incident response contacts, and vulnerability disclosure programs are not publicly detailed, representing areas for improvement. Privacy compliance is strong with clear privacy and cookie policies and consent mechanisms aligned with GDPR. Overall, eBay Australia presents a high level of trustworthiness and professionalism, with a strong security posture and excellent user experience. Strategic recommendations include enhancing transparency around security policies and incident response, and publishing vulnerability disclosure information to further strengthen trust and compliance.

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 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
    • 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 ebay.com.au

This scan found 15 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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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
57
Security headers
65
Email security
87
DNS health
80
Network security
100
GDPR outside view
88
Average
80

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

eBay Australia holds a dominant position in the Australian e-commerce market, leveraging the global brand and infrastructure of eBay Inc. Its competitive advantage lies in its extensive product range, trusted platform, and integrated services such as eBay Plus. Revenue streams include listing fees, commissions, and premium services. The target customers range from individual consumers to small and medium businesses. Growth indicators include continuous promotional campaigns and expansion of categories. The partnership ecosystem includes payment processors and logistics providers, while the company maintains a strong focus on user experience and trust. Strategically, eBay Australia benefits from brand consistency and technological innovation but should continue to invest in security transparency and customer support enhancements to maintain market leadership.

Security posture

The security maturity of eBay Australia is high, with enforced HTTPS, comprehensive security headers, and client-side monitoring to detect errors and anomalies. No critical vulnerabilities or exposed sensitive data were detected in the analysis. However, the absence of publicly available security policies, incident response contacts, and vulnerability disclosure programs indicates potential gaps in transparency and readiness communication. Compliance with privacy regulations such as GDPR is evident through detailed privacy and cookie policies and consent mechanisms. The business impact of these gaps is moderate, as the platform is well-secured technically but could improve user trust and regulatory compliance by publishing explicit security governance documents and contact channels. Incident response readiness and security culture indicators are not publicly visible but likely robust given the enterprise scale.

Recommendations

  1. Publish a dedicated security policy page detailing security governance and controls.
  2. Establish and publicize a vulnerability disclosure program or security.txt file.
  3. Provide clear incident response contact information, including security@ or abuse@ email addresses.
  4. Enhance transparency around data protection officer contact details and GDPR compliance measures.
  5. Continue investing in client-side monitoring and proactive security measures to maintain high security posture.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
eBay Australia
Description
Buy & sell electronics, cars, clothes, collectibles & more on eBay Australia's online marketplace. Top brands, low prices & free shipping on many items.
Key services
Online auctions, Fixed price sales, Classified advertisements, eBay Plus membership, Deals and promotions
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Marko.js, Beacon API, SVG icons, Lazy loading images, Content Security Monitoring
Frameworks
Marko.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Client-side error monitoring
  • Use of Content Security Policy
  • Lazy loading with error handling

Analytics and tracking

Services
Custom in-house analytics, Beacon API
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
ads_platform_all_ads
Tracking pixels
ebay-rum-web, vlp-csm
Marketing tools
Beacon API, Custom event tracking
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 rich, professionally designed, and well-structured for e-commerce.
  3. Strong use of modern web technologies and client-side monitoring.
  4. Comprehensive privacy and cookie policies with consent mechanisms.
  5. No direct contact emails or phone numbers publicly listed; contact via help pages.
  6. No explicit security policy or incident response contact publicly found.
  7. No vulnerability disclosure or security.txt found.
  8. WHOIS data is privacy-protected but consistent with legitimate domain registration.
  9. Multiple external and subsidiary domains related to eBay ecosystem detected.
  10. Advertising and tracking practices are transparent and use known platforms.
Technical notes

Notes

The website uses a modern technology stack centered around Marko.js for server-side rendering and client-side interactivity. It employs lazy loading for images, SVG icons for UI elements, and the Beacon API for asynchronous event tracking. The site is well-structured with semantic HTML and accessibility features such as ARIA labels and keyboard navigation support. Performance optimizations include preconnect hints and efficient resource loading. No technical debt or outdated libraries were detected. The infrastructure likely leverages eBay's global CDN and hosting capabilities, ensuring fast and reliable delivery. Opportunities exist to further modernize by adopting emerging web standards and enhancing security transparency. Technical risks are minimal but should be monitored continuously to prevent supply chain or third-party script vulnerabilities.
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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