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Security report for gmarket.co.kr

Gmarket · E-commerce · South Korea

Medium risk. 5 critical or high findings in SSL/TLS, Security headers and 1 other check.

Security score

61/100

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 fashion, groceries, electronics, and home goods. It integrates multiple services such as Emart Mall, Homeplus, and live home shopping channels, positioning itself as a comprehensive online marketplace. The website demonstrates a mature digital infrastructure using modern web technologies like Next.js and React, with good mobile optimization and accessibility features. Security posture is strong with HTTPS and security headers implemented, though explicit privacy and cookie policies are not clearly found in the provided content. Overall, the platform is trustworthy and well-established in its market, but could improve transparency around privacy and data protection.

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

5 findings rated critical or high. Fix these first.

  1. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  2. 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';…
  3. 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

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

Keep watching gmarket.co.kr

This scan found 17 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.

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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
0
Security headers
55
Email security
70
DNS health
85
Network security
100
GDPR outside view
53
Average
61

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention gmarket.co.kr, from OffSeq Breach.

Total records
221,686
Employees
0
Customers
221,635
Third parties
51
Weak passwords
16%

233 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for gmarket.co.kr.

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Breach keeps ingesting new leaks, so these numbers can grow between scans.

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 e-commerce marketplace targeting general consumers in South Korea. It leverages partnerships with major retail brands like Emart and Homeplus, and integrates live home shopping channels, enhancing its competitive advantage. The business model focuses on product variety, discount promotions, and fast delivery services such as Star Delivery. The presence of multiple subdomains and partner sites indicates a broad ecosystem. The company appears to have a strong brand presence and extensive customer engagement through social media and marketing tools. Growth indicators include frequent promotional campaigns and integration of new services.

Security posture

The website employs HTTPS with strong SSL configuration and several security headers, indicating a good baseline security posture. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of explicit privacy policies, cookie consent mechanisms, and vulnerability disclosure information suggests gaps in compliance and transparency. Incident response contact information is not found, which could hinder effective security communication. Overall, the security maturity is good but could be enhanced by formalizing privacy and incident response documentation.

Recommendations

  1. Publish comprehensive privacy and cookie policies with clear consent mechanisms to improve compliance and user trust.
  2. Provide explicit contact information for security incidents and designate a data protection officer to enhance incident response readiness.
  3. Implement and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Regularly review and audit third-party scripts and tracking pixels to minimize security risks and ensure privacy compliance.
  5. Enhance transparency on data retention policies and GDPR compliance to align with international data protection standards.
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, Emart mall integration, Home shopping, Travel and ticket booking
Content quality
excellent
Branding
consistent

Technology

Stack
Next.js, React, Swiper.js, Google Tag Manager, TikTok Pixel, Criteo, Creative CDN, Various custom scripts
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 security headers
  • No exposed sensitive data in HTML
  • Secure forms with autocomplete off

Analytics and tracking

Services
Google Analytics, TikTok Analytics
Tracking level
extensive
Privacy practices
basic

Advertising

Ad networks
Criteo
Tracking pixels
TikTok Pixel
Marketing tools
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 explicit privacy, cookie, or terms of service pages found in the provided HTML snippet.
  3. WHOIS data is unavailable or restricted for this domain.
  4. Website uses modern web technologies and integrates multiple third-party analytics and advertising services.
  5. No direct company contact emails or phone numbers found in the HTML content.
  6. Social media presence confirmed via Twitter handle @gmarketstory.
  7. Website content is primarily in Korean targeting South Korean consumers.
  8. Strong e-commerce focus with multiple product categories and live home shopping integration.
  9. Security headers and HTTPS are properly implemented.
  10. No adult or NSFW content detected.
Technical notes

Notes

The website is built on a modern tech stack including Next.js and React, supporting server-side rendering and client-side interactivity. It uses Swiper.js for carousels and integrates multiple third-party analytics and advertising services such as Google Tag Manager, TikTok Pixel, and Criteo. The site is well-optimized for mobile devices and accessibility, with proper meta tags and SEO practices. Performance is moderate, likely due to rich content and multiple external resources. There is no detected CMS, suggesting a custom or proprietary platform. Hosting provider details are not evident from the HTML content. Technical risks include reliance on multiple third-party scripts which require ongoing security monitoring.
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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