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Security report for littelfuse.com

Littelfuse, Inc. · Manufacturing · United States

Medium risk. 3 critical or high findings in GDPR outside view and SSL/TLS.

Security score

74/100

Risk levelMedium

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

Littelfuse, Inc. is a global enterprise specializing in manufacturing advanced circuit protection, power control, and sensing solutions. Their products serve diverse sectors including automotive, industrial, telecommunications, medical devices, and consumer electronics. The company positions itself as a leader in its industry with a strong emphasis on innovation and sustainability, as evidenced by their 2025 Sustainability Report prominently featured on their website. Technically, the website demonstrates a mature digital infrastructure utilizing modern frameworks such as Next.js and React, integrated with Google Tag Manager and Verint's Unified WebSDK for analytics and marketing. The site is well-optimized for mobile devices, accessible, and SEO-friendly, reflecting a high level of digital maturity. From a security perspective, the site enforces HTTPS with strong SSL configurations and employs multiple security headers, indicating adherence to best practices. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of explicit security policies or incident response contacts suggests room for improvement in transparency and preparedness. Overall, the website presents a trustworthy and professional front for Littelfuse, though the lack of WHOIS data slightly diminishes domain registration transparency. The site is suitable for its target audience of engineers and business clients, providing comprehensive product and company information.

Scanned

This is an earlier scan of littelfuse.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
53/ 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

3 findings rated critical or high. Fix these first.

  1. GDPR outside view

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

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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

  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

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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
72
Security headers
85
Email security
60
DNS health
75
Network security
100
GDPR outside view
53
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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Brand lookalikes

Add-on

Domains that imitate littelfuse.com and could be used for phishing or spoofed email, tracked in OffSeq Breach.

Tracked
8
Registered
8
Resolving
8
High or critical
0

Last checked 2026-07-09

Masked preview

  • li•••••••••.comMediumrepetition
  • li•••••••••.comMediuminsertion
  • il••••••••.comLowhomoglyph

See the full lookalike list

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Lookalike data refreshes continuously. Monitoring on Breach alerts you when a variant is registered, gains a mail server or starts serving HTTPS.

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Technical appendix

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

Business context

Business profile

Littelfuse operates as an essential manufacturing entity within the technology and transportation sectors, focusing on circuit protection and power control components. Their business model revolves around product innovation and global distribution. The company targets industrial clients, OEMs, and distributors, leveraging a strong brand presence and sustainability initiatives to differentiate itself. The website's content and structure support lead generation and customer engagement, with tools like product cross-reference and sample requests enhancing customer service. The absence of visible subsidiaries or partner domains suggests a focused corporate structure. The company maintains a professional digital presence with consistent branding and comprehensive product information, supporting its market leadership and growth strategies.

Security posture

The website exhibits a strong security posture with enforced HTTPS, robust SSL configuration, and multiple security headers such as Content-Security-Policy and X-Frame-Options. There is no evidence of exposed sensitive data or vulnerable libraries. Forms appear to be securely implemented, and cookie consent mechanisms are in place, supporting privacy compliance. However, the site lacks publicly available security policies, incident response procedures, or dedicated security contact channels, which are important for transparency and regulatory compliance. The WHOIS data is unavailable, which is a minor concern but common for enterprises using privacy services. Overall, the security maturity is high but could be enhanced by publishing explicit security and incident response information.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency and compliance.
  2. Implement and publicize a vulnerability disclosure program to encourage responsible reporting.
  3. Regularly audit and update third-party libraries to mitigate potential vulnerabilities.
  4. Enhance visibility of data protection officer or privacy contacts to support GDPR compliance.
  5. Continue monitoring and optimizing security headers and SSL configurations for evolving threats.

Contact details published on the site

Addresses
Legal name
Littelfuse, Inc.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Littelfuse, Inc.
Description
Littelfuse is a global manufacturer of leading technologies in circuit protection, power control & sensing. Their products are used in automotive & commercial vehicles, industrial applications, data & telecommunications, medical devices, consumer electronics & appliances.
Key services
Circuit protection products, Power control solutions, Sensing technologies
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Verint Unified WebSDK, Font Awesome, Google Fonts
Frameworks
Next.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data detected
  • Secure forms with proper input handling

Analytics and tracking

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

Advertising

Marketing tools
Verint Unified WebSDK
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Professional and comprehensive content focused on circuit protection and power control products.
  3. Strong use of modern web technologies and analytics tools.
  4. Clear contact information and structured data enhance trust and SEO.
  5. No explicit security or incident response policies found on the site.
  6. WHOIS data is unavailable, which slightly impacts trust but does not indicate malicious intent.
Technical notes

Notes

The website is built on a modern React and Next.js framework, leveraging server-side rendering and optimized image delivery for performance. Integration with Google Tag Manager and Verint's Unified WebSDK indicates advanced analytics and marketing capabilities. The site uses Google Fonts and Font Awesome for typography and icons, ensuring a consistent and professional look. Performance is moderate with good mobile optimization and accessibility features. Hosting appears to be on a CDN-backed infrastructure, enhancing availability and speed. No CMS was detected, suggesting a custom or proprietary content management approach. Technical risks are minimal, but continuous updates and monitoring are recommended to maintain security and performance.
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. 68/100Medium27 findingsView report
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