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Security report for sktelink.com

SK Telink CO,LTD. · Telecommunications · South Korea

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

60/100

Risk levelMedium

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

SK Telink CO,LTD. operates a comprehensive telecommunications website primarily targeting Korean-speaking customers. The company offers international calling services (notably the 00700 service), satellite communications, and a budget mobile phone service branded as SK 7mobile. The website positions itself as a market leader in international call quality and customer satisfaction, supported by multiple long-term awards. The target audience includes both individual and corporate customers seeking reliable international and satellite communication solutions. Technically, the website employs modern JavaScript frameworks such as Vue.js and integrates multiple analytics platforms including Google Analytics and Naver Analytics. The site is mobile-optimized and provides a professional user experience with clear navigation and relevant content. Security posture is moderate with HTTPS enforced but lacks visible security headers and explicit cookie consent mechanisms. The WHOIS data is notably missing or inaccessible, which raises concerns about domain registration legitimacy despite the professional appearance and business credibility of the site. Overall, the website is functional and trustworthy from a user perspective but would benefit from improved transparency in domain registration and enhanced security practices.

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

7 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 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';…

  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

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

Keep watching sktelink.com

This scan found 26 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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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
15
Email security
70
DNS health
30
Network security
100
GDPR outside view
53
Average
60

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

SK Telink is positioned as a leading telecommunications provider in South Korea, specializing in international calling and satellite communication services. The company leverages its strong brand reputation, evidenced by numerous customer satisfaction awards, to maintain a competitive advantage. Its business model focuses on providing premium communication services to both individual consumers and enterprises, including value-added services like international SMS and budget mobile plans. The partnership ecosystem includes related domains such as SK7mobile and 00700, indicating a cohesive service offering. The company appears to have a large operational scale with a physical presence in Seoul. Growth indicators include continuous service promotions and a well-maintained digital presence. Strategic observations suggest the company could enhance trust by addressing WHOIS transparency and expanding privacy compliance measures.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enabled and no visible exposure of sensitive data. However, the absence of key security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options reduces the overall security posture. There is no publicly available incident response or vulnerability disclosure policy, which limits transparency and preparedness for security incidents. The lack of a cookie consent mechanism also indicates partial non-compliance with privacy regulations such as GDPR. No vulnerable libraries or insecure forms were detected in the provided content. The security culture appears to be basic, with room for improvement in formalizing security policies and enhancing user privacy protections.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to mitigate common web vulnerabilities.
  2. Publish a clear incident response and vulnerability disclosure policy to improve transparency and readiness.
  3. Add a cookie consent banner and mechanism to comply with privacy regulations and enhance user trust.
  4. Improve accessibility features to broaden user inclusivity and meet regulatory standards.
  5. Investigate and resolve the WHOIS data inconsistency to strengthen domain legitimacy and trustworthiness.

Contact details published on the site

Addresses
Legal name
SK Telink CO,LTD.
Registration number
104-81-43391
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SK Telink CO,LTD.
Description
국제전화 00700, SK 7mobile 알뜰폰, 기업용 통신서비스, 고객센터 등 안내
Key services
국제전화 00700, 기업형 국제 SMS 서비스, 위성통신서비스 (Inmarsat, VSAT), SK 7mobile 알뜰폰 서비스
Content quality
good
Branding
consistent

Technology

Stack
Google Analytics, Naver Analytics, AdInsight, Slick Carousel
Frameworks
Vue.js
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced (implied by https URLs)
  • No visible exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Naver Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
AdInsight
Tracking pixels
Naver Analytics
Marketing tools
Naver Analytics, AdInsight
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 security blocking detected
  3. WHOIS data is missing or unavailable, which is unusual
  4. Strong branding and multiple customer satisfaction awards displayed
  5. Multiple external links to related SK services and regulatory portals
  6. No visible forms collecting personal data on main page
  7. No explicit cookie consent banner found
  8. No visible security.txt or vulnerability disclosure policy
  9. Contact phone numbers and physical address clearly provided in footer
  10. Use of modern JavaScript frameworks and analytics tools
Technical notes

Notes

The website is built using modern front-end technologies, notably Vue.js, and integrates multiple third-party analytics and marketing tools such as Google Analytics, Naver Analytics, and AdInsight. The site uses slick carousel for interactive content display and is optimized for mobile devices with responsive design. Performance is moderate, with preloading of CSS and JS assets indicating some optimization efforts. However, the absence of a detected CMS suggests a custom or proprietary platform. Hosting details are not disclosed. Technical risks include missing security headers and lack of explicit privacy compliance mechanisms. Opportunities exist to enhance performance further and improve accessibility compliance.
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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