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Security report for fuelcellenergy.com

FuelCell Energy · Energy · United States

Low risk. 2 critical or high findings in SSL/TLS.

Security score

83/100

Risk levelLow

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

FuelCell Energy is a well-established American clean technology company specializing in fuel cell technology for large-scale, continuous power solutions and emissions management. Their website presents a comprehensive portfolio of products and applications targeting industries such as data centers, utilities, manufacturing, and more. The company emphasizes sustainability and innovation with over 50 years of expertise and global deployments. The digital infrastructure is built on HubSpot CMS with modern frameworks and analytics tools, providing a professional and responsive user experience. Security posture is strong with HTTPS and cookie consent mechanisms, though explicit security policies and incident response contacts are absent. The missing WHOIS data is a notable anomaly but does not detract significantly from the overall legitimacy given the detailed business presence and investor relations. Strategic recommendations include enhancing security transparency and verifying domain registration details.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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

2 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

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

Keep watching fuelcellenergy.com

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

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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
95
Email security
80
DNS health
85
Network security
100
GDPR outside view
83
Average
83

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

FuelCell Energy operates in the energy sector with a focus on clean and sustainable fuel cell technologies. Their business model includes manufacturing, deployment, and servicing of fuel cell systems for power generation, combined heat and power, microgrids, and hydrogen production. The company targets industrial, commercial, and utility customers, leveraging partnerships and subsidiaries such as Versa Power Systems. Their market position is strong with a history of innovation and a clear commitment to sustainability. Revenue streams likely include product sales, service agreements, and energy solutions. The website supports investor relations and provides rich content for customer engagement, indicating a mature and growth-oriented business.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, cookie consent mechanisms, and absence of exposed sensitive data. However, it lacks explicit security policies, incident response information, and vulnerability disclosure channels, which are important for transparency and trust. No vulnerable libraries or security misconfigurations were detected in the HTML content. The missing WHOIS data raises some concerns about domain registration transparency but does not indicate immediate risk. Overall, the security maturity is good but could be improved by publishing dedicated security documentation and contacts.

Recommendations

  1. Publish a dedicated security policy page detailing security practices and compliance.
  2. Add an incident response contact email or form to facilitate vulnerability reporting.
  3. Implement and document a vulnerability disclosure program or security.txt file.
  4. Verify and update WHOIS domain registration information to improve trust.
  5. Enhance security headers such as X-Frame-Options and X-Content-Type-Options for better protection.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
FuelCell Energy
Description
FuelCell Energy is an American clean technology and manufacturing company providing large-scale, continuous, power solutions and emissions management. They enable a world empowered by clean energy with a platform based on fuel cell technology.
Key services
Fuel cell power generation systems, Combined heat and power (CHP) systems, Microgrids, Biogas energy solutions, Carbon capture, Electrolysis for hydrogen production, Distributed hydrogen generation, Customer service and energy service agreements
Content quality
excellent
Branding
consistent

Technology

Stack
HubSpot CMS, Bootstrap CSS, jQuery, Google Tag Manager, HubSpot Analytics, HubSpot Web Interactives
Frameworks
Bootstrap
Platforms
HubSpot
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of consent mechanism for cookies
  • No visible vulnerable libraries

Analytics and tracking

Services
HubSpot Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
HubSpot Ads
Tracking pixels
HubSpot Analytics
Marketing tools
HubSpot Marketing
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 and content-rich.
  2. No signs of malware or phishing.
  3. Strong focus on clean energy and fuel cell technology.
  4. No direct contact emails or phone numbers found on main pages; contact via form only.
  5. Privacy and cookie policies are present and GDPR compliant.
  6. No explicit security policy or incident response info found.
  7. WHOIS data missing, which reduces trust score but does not negate legitimacy.
  8. Use of HubSpot CMS and marketing tools is evident.
  9. Social media presence on Twitter and LinkedIn.
  10. No adult or questionable content detected.
Technical notes

Notes

The website is built on HubSpot CMS using Bootstrap and jQuery, with integration of Google Tag Manager and HubSpot analytics. The design is modern, responsive, and optimized for mobile devices. Performance is moderate, typical for CMS-driven sites with rich content. Accessibility features such as skip links and language switchers are present, indicating good usability. SEO is supported by proper meta tags, Open Graph, and structured data in JSON-LD format. No critical technical debt or vulnerabilities were identified in the HTML content. Opportunities exist to improve security headers and streamline analytics for privacy compliance.
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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