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Security report for zeiss.com.tw

蔡司 · Technology · Taiwan

Low risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

76/100

Risk levelLow

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

ZEISS Taiwan operates as a regional branch of the global ZEISS Group, a leading technology company specializing in optics and optoelectronics. The website reflects a professional corporate presence targeting both general and professional audiences in Taiwan, offering services in vision care, medical technology, and semiconductor manufacturing technology. The site is well-branded and consistent with the global ZEISS identity. Technically, the website is built on Adobe Experience Manager, uses modern JavaScript libraries, and implements GDPR-compliant cookie consent via OneTrust. Security posture is solid with HTTPS enforced and no visible vulnerabilities, though explicit security policies and incident response contacts are not published. Overall, the website is trustworthy and professionally maintained, with room for improvement in privacy and security transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 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

3 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 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. 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.com.tw

This scan found 21 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

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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
57
Security headers
50
Email security
80
DNS health
80
Network security
100
GDPR outside view
88
Average
76

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 Taiwan benefits from the strong global brand and market position of ZEISS Group. The business model focuses on delivering advanced technology solutions in optics and healthcare sectors, serving both B2B and B2C markets. The website links extensively to other ZEISS regional domains, indicating a broad partnership and subsidiary ecosystem. The lack of direct contact details on the homepage suggests a controlled communication channel via a dedicated contact page. The company targets professional sectors such as medical technology and semiconductor manufacturing, indicating a high-value customer base. The digital presence is mature, leveraging enterprise-grade CMS and compliance tools.

Security posture

The website demonstrates a good security baseline with HTTPS and cookie consent mechanisms. However, the absence of explicit security policies, vulnerability disclosure programs, and incident response contacts limits transparency and may impact user trust. No security headers were detected in the provided data, which could be improved to enhance protection against common web attacks. No vulnerabilities or exposed sensitive data were found in the HTML content. Overall, the security posture is adequate but could be strengthened by publishing relevant policies and implementing additional HTTP security headers.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service accessible from the homepage.
  2. Add explicit security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Create and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Provide clear incident response contact information, including security or abuse email addresses.
  5. Enhance transparency around data retention policies and GDPR compliance details.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
蔡司
Description
蔡司是世界光學和光電電子技術領先的科技企業。
Key services
Vision Care, Medical Technology, Semiconductor Manufacturing Technology
Content quality
good
Branding
consistent

Technology

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

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Marketing tools
OneTrust Cookie Consent
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 no blocking or WAF challenge.
  2. Content is professional and consistent with a global technology and healthcare brand.
  3. Cookie consent is implemented via OneTrust, indicating GDPR awareness.
  4. No explicit privacy policy or terms of service found on the homepage.
  5. Contact information is limited to a contact page link; no direct emails or phone numbers found in the homepage HTML.
  6. Use of Adobe Experience Manager CMS and modern JavaScript libraries.
  7. No visible security.txt or vulnerability disclosure page.
  8. No explicit security or incident response policies published.
  9. Strong branding consistency with ZEISS Group international domains linked.
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on Adobe Experience Manager, indicating a robust enterprise CMS platform. It uses modern JavaScript libraries and asynchronous loading for performance optimization. The presence of Google Tag Manager and OneTrust scripts shows integration of analytics and privacy compliance tools. The site is mobile optimized with responsive images and video content. Performance is moderate, with some room for improvement in loading speed and SEO metadata completeness. Accessibility features such as skip links and ARIA labels are present, supporting good user experience for assistive technologies.
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. 74/100Medium30 findingsView report
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