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Security report for zeiss.co.kr

ZEISS · Technology · South Korea

Medium risk. 5 critical or high findings in Email security, Security headers and 1 other check.

Security score

70/100

Risk levelMedium

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

ZEISS Korea operates as a regional branch of the global ZEISS Group, a leading technology company specializing in optics and optoelectronics. The website presents a professional corporate image with content focused on vision care, medical technology, and semiconductor manufacturing technology. The site is built on Adobe Experience Manager and employs modern web technologies including Google Tag Manager and OneTrust for cookie consent. Despite the professional presentation and rich multimedia content, the domain WHOIS data is missing or indicates the domain is not registered, which is inconsistent with the expected legitimacy of a global brand. No explicit privacy policy or terms of service were found on the main page, though a contact page is linked. The site uses HTTPS and has a cookie consent mechanism, but lacks visible security headers and published security policies. Overall, the website is well designed and functional but the domain registration anomaly and limited privacy disclosures present concerns that should be addressed.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 100 · Low
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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

  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 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. 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching zeiss.co.kr

This scan found 21 issues across 5 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
57
Security headers
50
Email security
40
DNS health
75
Network security
100
GDPR outside view
100
Average
70

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

ZEISS Korea targets both general consumers and business customers in the healthcare and technology sectors. The company leverages its global brand reputation and offers specialized products and services in vision care, medical engineering, and semiconductor manufacturing. The website's multilingual support and extensive related domain links reflect a broad international presence. The business model is focused on technology innovation and healthcare solutions, positioning ZEISS as a market leader. The absence of clear company registration details and domain registration data is unusual for an enterprise of this scale and may indicate administrative or technical issues with domain management.

Security posture

The website enforces HTTPS and implements a cookie consent banner, indicating baseline security and privacy awareness. However, no explicit security headers such as Content Security Policy or HSTS were detected, and no published security or incident response policies are available. The absence of a vulnerability disclosure program or security.txt file limits transparency and may reduce trust among security-conscious users. The missing WHOIS registration data is a significant concern from a security and legitimacy perspective. Overall, the security posture is moderate but could be improved by publishing security policies, adding security headers, and clarifying domain ownership.

Recommendations

  1. Register and publish complete WHOIS domain registration data to ensure transparency and trust.
  2. Publish a comprehensive privacy policy and terms of service accessible from the main website.
  3. Implement and configure security headers such as CSP, HSTS, and X-Frame-Options to enhance security.
  4. Establish and publicize a vulnerability disclosure program and security.txt file to improve security transparency.
  5. Provide clear contact information including company emails and phone numbers on the website to improve business credibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ZEISS
Description
ZEISS는 광학 및 광전자 산업을 선도하는 세계적인 기술 기업입니다.
Key services
Vision Care, Medical Technology, Semiconductor Manufacturing Technology
Content quality
good
Branding
consistent

Technology

Stack
Adobe Helix RUM, Google Tag Manager, OneTrust Cookie Consent, JavaScript ES6+, SVG icons
Frameworks
Adobe Experience Manager (AEM)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced (implied by URL)
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
OneTrust Cookie Consent
Marketing tools
OneTrust
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 and multimedia
  2. No WHOIS registration data found for domain zeiss.co.kr
  3. Cookie consent banner present and functional
  4. No explicit privacy policy or terms of service found on main page
  5. Contact page linked but no direct emails or phone numbers found in main HTML
  6. Uses Adobe Experience Manager CMS and modern web technologies
  7. Multiple language alternate links indicate global presence
  8. No security.txt or vulnerability disclosure information found
  9. No explicit security headers detected in provided data
Technical notes

Notes

The website is built on Adobe Experience Manager, a robust enterprise CMS platform, and uses modern JavaScript libraries and SVG icons for a responsive and visually appealing design. Google Tag Manager and OneTrust are integrated for analytics and cookie consent management. The site is mobile optimized and accessible with good SEO practices including meta tags and structured data. Performance is moderate with preloading of key assets. However, the lack of visible security headers and incomplete WHOIS data represent technical risks. Hosting provider details are not evident from the data. Overall, the technical infrastructure is solid but could benefit from enhanced security configurations and domain management improvements.
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. 67/100Medium31 findingsView report
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