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Security report for mercadolivre.com.br

Ebazar.com.br LTDA. · E-commerce · Brazil

Low risk. 5 critical or high findings in Security headers and GDPR outside view.

Security score

79/100

Risk levelLow

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

Mercado Livre Brasil is a leading e-commerce marketplace platform in Brazil, offering a wide range of products across numerous categories with a strong focus on user experience, accessibility, and comprehensive service offerings including payment processing, shipping, and subscription services. The platform is supported by a robust technical infrastructure leveraging modern web technologies and extensive third-party integrations for analytics and advertising. Security measures are well implemented with strong SSL configurations and security headers, although some improvements in protocol support and explicit security policies could enhance the posture further. Overall, the website demonstrates high professionalism, trustworthiness, and digital maturity, positioning it as a dominant player in the Brazilian e-commerce market.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
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

5 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"

  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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, YouTube, Google Ads

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching mercadolivre.com.br

This scan found 11 issues across 5 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

Email alerts on material changes and an exportable JSON history of every change.

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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
90
Security headers
70
Email security
100
DNS health
90
Network security
100
GDPR outside view
25
Average
79

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

Mercado Livre operates an enterprise-level e-commerce marketplace targeting Brazilian consumers, providing key services such as online buying and selling, payment solutions via Mercado Pago, and promotional campaigns. The company benefits from a strong brand presence, consistent branding, and a broad partnership ecosystem including Mercado Pago and Mercado Shops. Its business model is based on facilitating transactions and offering value-added services like subscriptions and advertising. The platform's extensive product catalog and user-centric design support high engagement and market penetration. Strategic observations include leveraging data-driven marketing, maintaining strong security and privacy compliance, and continuous technological enhancements to sustain competitive advantage.

Security posture

The website exhibits a good security maturity level with valid SSL certificates issued by Amazon, strict transport security with preload, and comprehensive content security policies with reporting mechanisms. Cookies are set with secure, HttpOnly, and SameSite attributes, enhancing session security. No critical vulnerabilities such as Heartbleed or POODLE were detected. However, the absence of TLS 1.2 or higher protocol support is a notable gap. There is no explicit security policy or incident response information publicly available, which could be improved to enhance transparency and readiness. The platform demonstrates a strong security culture through its use of modern security headers and monitoring tools like New Relic and Datadog.

Recommendations

  1. Enable TLS 1.2 or higher protocols to ensure secure communications.
  2. Reduce reliance on 'unsafe-inline' and 'unsafe-eval' in Content-Security-Policy to mitigate XSS risks.
  3. Implement DNSSEC to enhance DNS security and integrity.
  4. Publish a security.txt file to facilitate vulnerability disclosure and improve transparency.
  5. Provide clear incident response contact channels and security policy documentation.

Contact details published on the site

Addresses
Legal name
Ebazar.com.br LTDA.
Technical notes

Notes

The technical infrastructure is robust, utilizing Amazon AWS for hosting, Tengine as the web server, and a modern JavaScript stack including React-like components and Web Components (LitElement). Performance optimizations such as lazy loading and preconnect hints are employed. The site integrates multiple analytics and monitoring services including New Relic, Hotjar, Melidata, and Perfill, indicating a mature approach to performance and user behavior tracking. The platform is optimized for desktop with good mobile support and accessibility features. There is no detected CMS, suggesting a custom or proprietary platform. The technical setup supports a fast, reliable, and scalable e-commerce experience with opportunities to enhance security protocols and reduce technical debt.
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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