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Security report for mirion.com

Mirion Technologies · Technology · N/a

Medium risk. 5 critical or high findings in SSL/TLS, GDPR outside view and 1 other check.

Security score

68/100

Risk levelMedium

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

Mirion Technologies operates as a leading provider of radiation measurement and detection devices, serving diverse industries including nuclear power, healthcare, and scientific research. The company offers a broad portfolio of products focused on radiation safety, spectroscopy, and scientific analysis, positioning itself as a key player in the technology sector related to nuclear measurement. The website reflects a mature digital presence with professional design, clear navigation, and comprehensive product information tailored to industrial and scientific audiences. Technically, the website employs modern JavaScript frameworks such as Alpine.js, integrates Google Tag Manager for analytics, and uses OneTrust for cookie consent management, demonstrating compliance with privacy regulations like GDPR. The site is mobile-optimized and accessible, with good SEO practices and performance characteristics. However, the absence of explicit CMS or hosting provider details limits deeper infrastructure insights. From a security perspective, the site enforces HTTPS and includes standard security headers, contributing to a good security posture. There are no visible vulnerabilities or exposed sensitive data. Nonetheless, the lack of published security policies, incident response plans, or vulnerability disclosure mechanisms suggests room for improvement in transparency and security maturity. Overall, Mirion's website presents a trustworthy and professional front for its business, though the missing WHOIS data and lack of direct contact information slightly reduce confidence. Strategic recommendations include enhancing security transparency, publishing incident response details, and verifying domain registration information to strengthen trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

5 findings rated critical or high. Fix these first.

  1. 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

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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. 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';…

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

Keep watching mirion.com

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

€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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Full report

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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
35
Email security
80
DNS health
80
Network security
100
GDPR outside view
73
Average
68

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

Mirion Technologies is positioned as an essential entity within the radiation measurement and detection industry, targeting B2B customers in energy, healthcare, and scientific sectors. The company leverages a business model focused on manufacturing and technology solutions, with key revenue streams likely derived from product sales and service contracts. The website indicates a strong market presence with a consistent brand and comprehensive product offerings. The investor relations subdomain suggests a publicly traded or investor-focused structure. Growth indicators include active event participation and a broad product portfolio. Partnerships and related domains are limited but include investor relations. The company demonstrates a strategic focus on compliance and customer engagement through privacy and cookie policies.

Security posture

The website exhibits a good security maturity level with enforced HTTPS, presence of security headers, and no exposed sensitive information. The use of cookie consent tools aligns with privacy regulations. However, the absence of a published security policy, incident response plan, or vulnerability disclosure program indicates gaps in security governance and transparency. No direct security contact channels were found, which may hinder incident reporting and response. Compliance with GDPR is evident but could be enhanced with clearer data protection officer contact details. Overall, the security posture is solid for a commercial website but lacks advanced transparency and formalized security documentation.

Recommendations

  1. Publish a dedicated security policy and incident response plan on the website to improve transparency and trust.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Provide direct security contact information such as a security@ or abuse@ email address for incident reporting.
  4. Verify and update WHOIS domain registration information to ensure consistency and legitimacy.
  5. Regularly audit and update third-party scripts and tracking tools to minimize security risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Mirion Technologies
Description
Mirion provides nuclear measurement and detection systems for a variety of industries.
Key services
Radiation safety instruments, Spectroscopy & scientific analysis systems, Nuclear measurement and detection systems
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Alpine.js, Google Tag Manager, OneTrust Cookie Consent
Frameworks
Alpine.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • 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
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is professionally designed with clear navigation and comprehensive product information.
  2. No WHOIS data available, which is unusual for a commercial domain.
  3. Privacy and cookie policies are present with consent mechanisms, indicating GDPR awareness.
  4. No direct contact emails or phone numbers found in the HTML; contact is via form.
  5. No explicit security or incident response policies published.
  6. Use of modern JavaScript frameworks and Google Tag Manager for analytics.
  7. No adult or questionable content detected.
  8. No WAF or blocking mechanisms detected.
Technical notes

Notes

The website uses a modern tech stack including Alpine.js for reactive UI components, Google Tag Manager for analytics, and OneTrust for cookie consent management. The HTML structure is valid and optimized for SEO with appropriate meta tags and Open Graph data. Performance is moderate with asynchronous script loading and prefetching of key resources. Mobile optimization and accessibility features are well implemented, providing a good user experience across devices. The absence of a detected CMS suggests a custom or static site architecture. Hosting provider details are not evident, limiting infrastructure assessment. Overall, the technical implementation supports business goals effectively with opportunities for further modernization and security enhancements.
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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