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Security report for sk.co.kr

SK · Energy · N/a

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

Security score

53/100

Risk levelMedium

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

SK is a global industrial conglomerate focused on driving economic and social prosperity through innovative solutions in energy, transportation, and technology sectors. The website presents a professional and comprehensive overview of SK's operations, investments, and sustainability initiatives, targeting global business partners, investors, and communities. The digital infrastructure leverages modern technologies such as Google Tag Manager, Google Analytics, and Hotjar for analytics and user experience enhancement. The site is mobile optimized, accessible, and SEO friendly, reflecting a mature digital presence. Security posture is strong with HTTPS enforced and no visible vulnerabilities, though security headers and explicit incident response information are absent. Privacy compliance is partially met with a comprehensive privacy policy but lacks cookie consent mechanisms. WHOIS data for the subdomain eng.sk.com is unavailable, likely due to it being a subdomain of sk.com, which is a well-established domain. Overall, the website is trustworthy, professional, and well-maintained, with minor improvements recommended in privacy and security transparency.

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 sk.co.kr

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.

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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
42
Security headers
50
Email security
65
DNS health
70
Network security
40
GDPR outside view
53
Average
53

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 sk.co.kr, from OffSeq Breach.

Total records
1,753
Employees
0
Customers
1,751
Third parties
2
Weak passwords
26%

5 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 sk.co.kr.

Select it in the checkout above.

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

SK operates as a major player in energy and transportation industries with significant investments in battery manufacturing and AI services. The company maintains a strong market position with large-scale operations in the U.S. and globally. Their business model emphasizes innovation, sustainability, and community engagement. The website highlights subsidiaries such as SK On and SK Siltron, indicating a diversified portfolio. The presence of regular news updates and perspectives suggests active communication and thought leadership. The lack of direct contact information on the main site may indicate a preference for controlled communication channels. The partnership ecosystem includes the parent domain sk.com, reinforcing corporate legitimacy.

Security posture

The website demonstrates a solid security foundation with HTTPS enabled and no exposed sensitive data. However, the absence of key security headers like Content-Security-Policy and Strict-Transport-Security reduces the overall security score. No vulnerability disclosures or security.txt files are present, and incident response contact details are missing, which could hinder rapid response to security incidents. Privacy compliance is partial, with a privacy policy present but no cookie consent mechanism. The use of third-party analytics tools introduces moderate user tracking, necessitating clear privacy disclosures. Overall, the security posture is good but could be enhanced by implementing additional headers, transparency, and user consent mechanisms.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Content-Type-Options, and Strict-Transport-Security to enhance protection against common web attacks.
  2. Add a visible cookie consent banner and detailed cookie policy to comply fully with GDPR and other privacy regulations.
  3. Publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  4. Provide clear contact information for security incidents and general inquiries to improve trust and incident response readiness.
  5. Regularly audit third-party scripts and tracking tools to minimize privacy risks and ensure compliance with data protection laws.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SK
Description
SK is a global leader driving economic and social prosperity through innovative solutions. Discover our cutting-edge companies and sustainable practices.
Key services
Battery manufacturing, Energy solutions, AI services, Sustainable industrial operations
Content quality
excellent
Branding
consistent

Technology

Stack
Google Tag Manager, Google Analytics, Hotjar, Flickity slider, Google Fonts (Open Sans)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Secure forms with POST method

Analytics and tracking

Services
Google Analytics, Hotjar
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Hotjar
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 no blocking or WAF challenges
  2. Content is rich, professionally presented, and regularly updated
  3. No direct contact emails or phone numbers found on the main page
  4. Privacy and terms pages are present and linked in footer
  5. No cookie consent banner or explicit cookie policy detected
  6. No explicit security or incident response contact information found
  7. Use of modern tracking and analytics tools (Google Analytics, Hotjar)
  8. No visible vulnerabilities or exposed sensitive data in HTML
  9. WHOIS data for the subdomain is not available, but main domain sk.com is established
Technical notes

Notes

The website uses a modern tech stack with Google Tag Manager, Google Analytics, Hotjar, and Flickity for UI components. It loads Google Fonts for typography and employs responsive design techniques for mobile optimization. The site is well-structured with proper meta tags for SEO and accessibility features like skip links and ARIA labels. Performance is moderate, with asynchronous loading of scripts and optimized images. No CMS or hosting provider is explicitly identified. Technical debt appears low, but opportunities exist to improve security headers and privacy mechanisms. Overall, the technical implementation supports a professional and user-friendly experience.
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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