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Security report for zeiss.co.uk

ZEISS · Technology · United Kingdom

High risk. 4 critical or high findings in DNS health, Security headers and 1 other check.

Security score

49/100

Risk levelHigh

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

ZEISS United Kingdom is a regional corporate website for ZEISS, a globally recognized technology enterprise specializing in optics and optoelectronics. The site presents a professional and well-structured digital presence, reflecting the company's international market position and focus on vision care and medical technology sectors. The website leverages modern technologies including Adobe Experience Manager, Google Tag Manager, and OneTrust for cookie consent, indicating a mature digital infrastructure. Security posture is strong with HTTPS enforced and no visible vulnerabilities, though explicit security policies and incident response information are absent. Privacy compliance is supported by a cookie consent mechanism, but no dedicated privacy policy page was detected on the homepage. Overall, the site is safe, trustworthy, and well-optimized for users, though WHOIS data for the www subdomain is unavailable due to query limitations, the domain is consistent with ZEISS's corporate branding and presence.

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

4 findings rated critical or high. Fix these first.

  1. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • Critical

      Domain Expired

      Domain expired 4 days ago

      What to do: Renew domain registration immediately

  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.uk

This scan found 23 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
57
Security headers
50
Email security
80
DNS health
20
Network security
100
GDPR outside view
88
Average
66
After the cap
49

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 · found on this site
  • 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.co.uk, from OffSeq Breach.

Total records
6
Employees
0
Customers
6
Third parties
0
Weak passwords
17%

3 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 zeiss.co.uk.

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

ZEISS operates in the high-technology and healthcare sectors, providing optics and optoelectronics products and services. The UK site targets a broad audience including healthcare professionals and technology customers. The business model is primarily B2B with some B2C elements. The company maintains a strong international brand with multiple country-specific domains. The website's linkage to the main ZEISS international site and consistent branding reinforce its market credibility. No direct revenue or registration data is available, but the enterprise scale and sector positioning suggest a large, established organization with a global footprint.

Security posture

The website demonstrates a solid security foundation with HTTPS enforced and no exposed sensitive data in the HTML content. Cookie consent is managed via OneTrust, indicating attention to privacy regulations such as GDPR. However, the absence of explicit security policies, incident response contacts, and vulnerability disclosure mechanisms represents a gap in transparency and readiness. No security headers were detected in the provided data, suggesting room for improvement in defense-in-depth strategies. Overall, the security posture is good but could be enhanced by publishing formal security and incident response information.

Recommendations

  1. Implement and publish a comprehensive privacy policy page linked prominently on the site.
  2. Add explicit security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options to enhance protection.
  3. Publish a security policy and incident response contact information to improve transparency and trust.
  4. Establish a vulnerability disclosure program and provide a security.txt file to facilitate responsible reporting.
  5. Enhance accessibility features and continue optimizing mobile responsiveness for improved user experience.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ZEISS
Description
ZEISS is an internationally leading technology enterprise operating in the fields of optics and optoelectronics.
Key services
optics, optoelectronics, vision care, medical technology
Content quality
good
Branding
consistent

Technology

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

Security

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

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 a corporate site for ZEISS in the UK, focused on optics and optoelectronics.
  2. Content is professional and well structured with good SEO and accessibility.
  3. Cookie consent is implemented via OneTrust with clear user controls.
  4. No direct contact emails or phone numbers found on homepage; contact page linked.
  5. No explicit security policy, incident response, or vulnerability disclosure information found.
  6. WHOIS data for www.zeiss.co.uk is not available due to invalid query; domain likely registered as zeiss.co.uk.
  7. No WAF or blocking mechanisms detected; site fully accessible.
  8. No adult or questionable content detected; site is safe for general audiences.
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 scalable graphics. Google Tag Manager is used for analytics and marketing, and OneTrust manages cookie consent, reflecting compliance with privacy regulations. The site is responsive and optimized for mobile devices, with preloading of critical assets to improve performance. No major technical debt or outdated technologies were detected. Hosting provider details are not explicit, but the infrastructure appears stable and professionally managed.
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. 73/100Medium30 findingsView report
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