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Security report for zeiss.cz

ZEISS · Technology · Czech Republic

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

Security score

79/100

Risk levelLow

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

ZEISS Česká republika is the Czech branch of ZEISS, a globally recognized technology company specializing in optics and optoelectronics. The website reflects a professional corporate presence with a focus on vision care, medical technology, and industrial applications. The company holds a leading market position in its industry segment and targets both general consumers and professional clients. The digital infrastructure is built on Adobe Experience Manager, leveraging modern web technologies and ensuring good mobile optimization and accessibility. Security posture is strong with HTTPS enforcement and security headers, although explicit security policies and incident response contacts are not publicly available. Privacy compliance is well addressed with GDPR-aligned cookie consent and privacy policies. Overall, the website demonstrates a mature digital presence consistent with a large enterprise brand.

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

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.cz

This scan found 19 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.

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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
85
Network security
100
GDPR outside view
100
Average
79

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 zeiss.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for zeiss.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

ZEISS operates in the technology and healthcare sectors, providing advanced optical and medical technology products and services. The Czech website is part of a global network of localized sites, indicating a broad international footprint. The business model centers on manufacturing and technology solutions with a focus on innovation and quality. The presence of multiple language versions and structured data indicates a strategic approach to global SEO and customer engagement. The lack of direct contact emails or phone numbers on the homepage suggests a preference for controlled communication channels such as contact forms. The company benefits from strong brand recognition and trust signals, although transparency in domain registration is limited due to privacy protection.

Security posture

The website employs HTTPS with strong SSL configuration and includes important security headers such as Content Security Policy and Strict-Transport-Security. The presence of a cookie consent mechanism demonstrates attention to privacy regulations. However, the absence of a dedicated security policy page and incident response contact information represents a gap in transparency and readiness communication. No vulnerabilities or exposed sensitive data were detected in the HTML content. The use of third-party scripts like Google Tag Manager and OneTrust is standard but requires ongoing monitoring for security risks. Overall, the security posture is solid but could be enhanced by publishing explicit security and incident response information.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and compliance.
  2. Provide clear incident response contact information to improve transparency and readiness.
  3. Implement a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.
  5. Enhance visible trust indicators such as certifications or awards on the website.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ZEISS
Description
ZEISS je mezinárodně působící technologická společnost s vedoucím postavením v oblasti optického a optoelektronického průmyslu.
Key services
Vision Care, Medical Technology, Industrial Metrology, Microscopy
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
85/100
Good practices seen
  • HTTPS enforced
  • Content Security Policy present
  • Cookie consent mechanism
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
OneTrust Cookie Consent
Transparency
good

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 large international technology company
  3. Multiple language versions and hreflang tags indicate global presence
  4. Cookie consent and privacy policy are implemented and GDPR compliant
  5. No direct emails or phone numbers found on the homepage; contact form is used
  6. No explicit security policy or incident response page found
  7. WHOIS data is unavailable, likely due to privacy protection
  8. Use of Adobe Experience Manager CMS and modern JavaScript libraries
  9. Good SEO and accessibility practices observed
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 consistent user experience. Performance is moderate with preloading of key assets and asynchronous loading of scripts. SEO is well supported with meta tags, Open Graph data, and hreflang attributes for internationalization. Accessibility features such as skip links and ARIA labels are present, contributing to a good user experience. The site uses a cookie consent banner compliant with GDPR, indicating a mature approach to privacy. Hosting provider details are not explicitly identified from the content. Overall, the technical implementation is solid with opportunities for performance optimization and enhanced security transparency.
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. 75/100Medium29 findingsView report
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