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Security report for opteon.de

Opteon · Energy · Germany

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

Security score

74/100

Risk levelMedium

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

Opteon is a business brand specializing in sustainable, high-performance refrigerants and specialty fluids with low greenhouse gas potential, targeting industrial and commercial sectors. The website reflects a professional B2B focus with consistent branding linked to its parent company, Chemours. The digital infrastructure is modern, leveraging Sitecore CMS, Google Tag Manager, and Microsoft Application Insights for analytics and telemetry. The site is well-optimized for mobile and accessibility, with good SEO practices evident in metadata and structured navigation. Security posture is solid with HTTPS enforced and cookie consent implemented, though explicit security policies and vulnerability disclosures are absent. Overall, the site presents a trustworthy and professional digital presence suitable for its market segment.

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

5 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 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';…

  2. 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.

    • High

      No SPF record found

      SPF helps prevent email spoofing

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

    • High

      No DMARC record found

      DMARC provides email authentication and reporting

      What to do: Add DMARC record: "v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com"

  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

      SSL Certificate Expires Soon

      SSL certificate expires in 29 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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

Keep watching opteon.de

This scan found 15 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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

€39.90one-time

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
85
Security headers
55
Email security
45
DNS health
70
Network security
100
GDPR outside view
88
Average
74

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

Opteon operates within the energy and manufacturing sectors, providing environmentally friendly refrigerants and specialty fluids. Its market position is strong, supported by Chemours' corporate backing. The business model is B2B, focusing on industrial clients requiring sustainable solutions. The website supports this with detailed product categories, industry applications, and resource centers. The partnership ecosystem includes Chemours and related domains. Growth indicators include multilingual support and comprehensive product offerings. However, direct contact details and legal disclosures are limited on the homepage, which could be improved for enhanced customer engagement.

Security posture

The website demonstrates a mature security posture with HTTPS and cookie consent mechanisms in place. Use of Microsoft Application Insights indicates active monitoring. However, the absence of published security policies, incident response contacts, and vulnerability disclosure mechanisms represents a compliance gap. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. Security headers are partially inferred but not explicitly confirmed. The site would benefit from enhanced transparency around security practices and formal incident response channels to strengthen trust and compliance with GDPR and related regulations.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service accessible from the homepage.
  2. Implement and publicly document security headers such as X-Frame-Options and X-Content-Type-Options.
  3. Create and maintain a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Provide explicit contact information for data protection officers and incident response teams.
  5. Enhance transparency around data retention policies and user privacy to improve GDPR compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Opteon
Description
Die Marke Opteon™ umfasst umweltfreundliche, äußerst leistungsfähige Produkte mit geringem Treibhauspotenzial für eine Reihe von Industrien und Einsatzzwecken.
Key services
Herstellung und Vertrieb von Kältemitteln, Spezialflüssigkeiten für industrielle Anwendungen, Produktinformationen und technische Unterstützung
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Microsoft Application Insights, FontAwesome, OneTrust Cookie Consent
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out
  • No exposed sensitive data in HTML
  • Use of Microsoft Application Insights for telemetry

Analytics and tracking

Services
Google Tag Manager, Microsoft Application Insights
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Microsoft Application Insights
Marketing tools
Microsoft Application Insights, 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 challenges.
  2. Content is professional, business-focused on sustainable refrigerants and specialty fluids.
  3. Cookie consent mechanism is implemented and visible.
  4. No explicit privacy policy or terms of service links found on the homepage HTML.
  5. Contact information is available via a contact page link but no direct emails or phone numbers found in the homepage HTML.
  6. Use of modern tracking and analytics tools like Google Tag Manager and Microsoft Application Insights.
  7. Site uses Sitecore CMS inferred from script paths.
  8. Strong branding consistency with parent company Chemours.
  9. No security.txt or vulnerability disclosure found.
  10. No explicit security or incident response policies published.
Technical notes

Notes

The website is built on a modern CMS platform (Sitecore) with integration of advanced analytics and tag management tools. Performance is moderate with good mobile optimization and accessibility features. The technical stack includes standard web technologies and third-party libraries like FontAwesome. Hosting is supported by Ultradns nameservers, indicating reliable DNS infrastructure. There is room for improvement in explicit security header implementation and formal documentation of security and privacy policies. Overall, the technical foundation is solid and supports the business needs effectively.
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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