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Security report for payco.com

엔에이치엔페이코(주) · Finance · South Korea

Medium risk. 7 critical or high findings in SSL/TLS, Security headers and 1 other check.

Security score

54/100

Risk levelMedium

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

PAYCO is a prominent South Korean digital payment and lifestyle platform operated by 엔에이치엔페이코(주). The website offers a comprehensive suite of services including online and offline payments, point rewards, money transfers, financial product marketplaces, and membership benefits. The platform targets general consumers in South Korea, providing convenience and integrated financial services. Technically, the website employs modern JavaScript technologies, Google Tag Manager for analytics, and is hosted on NHN Cloud infrastructure. The site is well-structured, mobile-optimized, and provides a professional user experience. Security posture is solid with HTTPS enforced and no visible vulnerabilities, though improvements are recommended in security headers and explicit cookie consent mechanisms. The absence of WHOIS data is a notable anomaly but does not detract significantly from the overall legitimacy given the strong business presence and official contact information. Overall, PAYCO presents as a trustworthy and mature digital financial service provider with room for enhanced security and privacy compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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

7 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 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';…

  3. 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

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

Keep watching payco.com

This scan found 19 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

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

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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
50
Email security
60
DNS health
80
Network security
100
GDPR outside view
35
Average
54

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

PAYCO holds a leading position in the Korean digital payment market, leveraging a broad ecosystem of services that integrate payments, financial products, and lifestyle benefits. Its business model revolves around providing seamless payment solutions combined with rewards and financial management tools, targeting a wide consumer base. The company benefits from strong partnerships within the NHN group and related service domains, enhancing its market reach and service diversity. Revenue streams likely include transaction fees, financial product commissions, and value-added services. The platform's extensive service offerings and integration with mobile and online channels indicate a strategic focus on digital transformation and customer retention through loyalty programs. The presence of developer and partner centers suggests an open ecosystem approach fostering third-party integrations and innovation.

Security posture

The website demonstrates a mature security posture with mandatory HTTPS usage and no exposed sensitive data in the HTML content. However, the lack of visible security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options indicates potential areas for hardening against common web attacks. No explicit incident response or vulnerability disclosure information is provided, which could limit transparency and responsiveness to security threats. Privacy compliance is partially addressed with a privacy policy present but lacks a cookie consent mechanism and GDPR-specific indicators. Overall, the security maturity is good but could be improved by adopting comprehensive security headers, publishing security policies, and implementing user consent mechanisms.

Recommendations

  1. Implement comprehensive HTTP security headers including CSP, HSTS, and X-Frame-Options to enhance protection against web attacks.
  2. Introduce an explicit cookie consent banner to comply with privacy regulations and improve user transparency.
  3. Publish detailed security policies and incident response procedures to build trust and demonstrate security readiness.
  4. Establish a vulnerability disclosure program or security.txt file to facilitate responsible reporting of security issues.
  5. Enhance website accessibility features to improve usability for all users and comply with accessibility standards.

Contact details published on the site

Addresses
Legal name
엔에이치엔페이코(주)
Registration number
563-81-00723
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
엔에이치엔페이코(주)
Description
PAYCO offers convenient payment, point accumulation, simple financial services, secure electronic document storage, and lifestyle services accessible anywhere.
Key services
Payment services (online/offline, QR code), Point rewards and coupons, Money transfer and scheduled remittance, Financial product marketplace, Membership and campus benefits
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery, Google Tag Manager, JSON-LD structured data
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Google Analytics (via Google Tag Manager)
Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is fully accessible with rich content in Korean language.
  2. No WAF or blocking mechanisms detected.
  3. WHOIS data is missing or not publicly available, which is uncommon for a commercial .com domain.
  4. Strong presence of official company information and contact details.
  5. Use of modern web technologies and Google Analytics for tracking.
  6. No explicit cookie consent banner found despite privacy policy presence.
  7. No visible security headers in HTML source; potential area for improvement.
  8. Content is safe and suitable for general audiences.
  9. Multiple external links to official partner and service domains.
Technical notes

Notes

The website uses a modern JavaScript-based front end with jQuery and Google Tag Manager for analytics. The presence of JSON-LD structured data improves SEO and semantic understanding. Hosting is provided by NHN Cloud, a reputable Korean cloud provider, ensuring reliable infrastructure. Performance is moderate with good mobile optimization but could benefit from further accessibility improvements. No CMS is explicitly detected, suggesting a custom or proprietary platform. The site includes multiple external links to official partner and service domains, indicating a well-integrated ecosystem. Technical debt appears low, but security header implementation and cookie consent mechanisms are areas for modernization.
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. 66/100Medium32 findingsView report
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