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Security report for gmarket.com

Gmarket · E-commerce · South Korea

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

Security score

68/100

Risk levelMedium

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

Gmarket is a leading South Korean e-commerce platform offering a wide range of products including groceries, fashion, electronics, and travel services. The website is well-designed, mobile-optimized, and integrates multiple services such as fast delivery, home shopping, and membership benefits. Technically, the site uses modern frameworks like Next.js and React, with extensive use of analytics and marketing tools. Security posture is generally good with HTTPS enforced, but lacks visible security headers and published security policies. WHOIS data is missing, which is unusual and warrants further investigation. Overall, the site presents a professional and trustworthy front but could improve transparency around privacy and security policies.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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 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

  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 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 gmarket.com

This scan found 21 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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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
47
Security headers
55
Email security
70
DNS health
85
Network security
100
GDPR outside view
53
Average
68

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

Gmarket operates as a large-scale online marketplace targeting general consumers in South Korea. It leverages partnerships with major retailers like Emart and Homeplus and integrates various delivery options including next-day and same-day delivery. The business model is based on marketplace commissions, promotional campaigns, and membership programs. The presence of multiple linked domains indicates a broad ecosystem supporting different services. The company appears to have a strong market position with a comprehensive service offering, although no explicit founding or parent company information was found in the content.

Security posture

The website enforces HTTPS and uses modern web technologies, which is positive for security. However, the absence of visible security headers such as Content-Security-Policy and X-Frame-Options reduces the defense-in-depth posture. No explicit security or incident response policies are published, and no contact channels for security incidents were found. The use of multiple third-party analytics and advertising scripts increases the attack surface and privacy risks. The missing WHOIS data is a concern for domain legitimacy verification. Overall, the security posture is moderate but could be significantly improved with better policy transparency and technical controls.

Recommendations

  1. Publish comprehensive privacy and cookie policies with clear consent mechanisms to improve privacy compliance.
  2. Implement and configure security headers to enhance protection against common web attacks.
  3. Establish and publicly disclose security and incident response policies including contact channels for reporting issues.
  4. Verify and update WHOIS registration information to ensure domain legitimacy and trust.
  5. Review third-party scripts and tracking tools to minimize privacy risks and improve user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Gmarket
Description
대한민국 1등 온라인쇼핑, G마켓! 전회원 할인쿠폰. 매일 특가 슈퍼딜. 남다른 혜택 스마일클럽.
Key services
Online shopping, Discount coupons, Super deals, Smile Club membership benefits, Star delivery (fast delivery), Home shopping, Travel and ticket booking, Overseas direct purchase, Rental services, Business services
Content quality
excellent
Branding
consistent

Technology

Stack
Next.js, React, Swiper.js, Google Tag Manager, TikTok Analytics, Criteo, Creative CDN, Various custom fonts (woff2)
Frameworks
Next.js
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of async and defer for scripts to improve performance
  • No visible exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics (via GTM), TikTok Analytics, Criteo
Tracking level
extensive
Privacy practices
basic

Advertising

Ad networks
Criteo
Tracking pixels
TikTok Analytics
Marketing tools
TikTok Pixel, Creative CDN scripts
Transparency
basic

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 no blocking detected.
  2. No WHOIS data available, which is unusual for a commercial domain.
  3. No explicit privacy, cookie, or terms of service pages found in the provided content.
  4. Strong use of modern web technologies and analytics/tracking tools.
  5. No direct company contact emails or phone numbers found in the content.
  6. Multiple external domains related to Gmarket and its services are linked.
  7. Content is safe and suitable for general audiences.
  8. Security headers are not visibly present in the HTML content.
  9. Site uses HTTPS and modern fonts and scripts for performance and UX.
Technical notes

Notes

The website is built on a modern React/Next.js stack with server-side rendering and client-side hydration. It uses Swiper.js for interactive carousels and loads fonts asynchronously for performance. Analytics and marketing tools include Google Tag Manager, TikTok Pixel, and Criteo retargeting. The site is mobile-optimized and accessible with skip navigation links and ARIA attributes. Performance appears moderate with preloading of fonts and styles. However, no CMS or hosting provider details were identified. The technical implementation is solid but could benefit from enhanced security headers and clearer privacy controls.
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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