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Security report for fronius.com

Fronius International · Energy · Austria

Low risk. 1 critical or high finding in SSL/TLS.

Security score

83/100

Risk levelLow

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

Fronius International is a well-established company specializing in energy technology, particularly solar energy, battery charging, and welding solutions. The company targets industrial and business customers globally, offering advanced technological products and services. The website reflects a professional and consistent brand image with a focus on energy sector solutions. Technically, the site is built using modern frameworks such as Next.js and React, ensuring good performance and mobile optimization. Security measures are robust with HTTPS enforced and multiple security headers present, although explicit privacy and cookie policies are not evident in the provided content. The absence of WHOIS data limits full domain legitimacy verification, but the website's professional presentation and social media presence support its credibility. Overall, the site demonstrates a mature digital infrastructure with room for improvement in privacy compliance and transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 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

1 finding 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

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

Keep watching fronius.com

This scan found 17 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
72
Security headers
75
Email security
85
DNS health
70
Network security
100
GDPR outside view
95
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

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 fronius.com, from OffSeq Breach.

Total records
20,757
Employees
44
Customers
20,567
Third parties
146
Weak passwords
8%

Latest record dated 2026-06-17 · 92 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 fronius.com.

Select it in the checkout above.

Masked preview

  • –fs.fronius.com2026-06-17
  • –fs.fronius.com2026-06-04
  • –filetransfer.fronius.com2026-05-28
  • –fs.fronius.com2026-05-25
  • –fronius.com2026-05-25

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

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

Business context

Business profile

Fronius International holds a strong market position in the energy technology sector, focusing on solar and industrial energy solutions. Their business model revolves around manufacturing and technology services, catering to professional and industrial clients. The company leverages digital channels including social media to engage with its audience. While the website content is relevant and professionally presented, the lack of visible privacy and terms policies may impact trust for privacy-conscious customers. The company appears to operate at a large scale with international reach, although specific founding year and corporate structure details are not disclosed in the content. No direct partnerships or subsidiaries were identified from the website data.

Security posture

The website exhibits a solid security posture with HTTPS enabled and comprehensive security headers such as HSTS, CSP, and X-Frame-Options implemented. No vulnerabilities or exposed sensitive data were detected in the analyzed content. However, the absence of published security policies, incident response contacts, or vulnerability disclosure mechanisms indicates potential gaps in transparency and readiness for security incidents. Privacy compliance is limited due to missing explicit privacy and cookie policies, which could be a compliance risk under regulations like GDPR. Overall, the security maturity is good but could be enhanced by formalizing and publishing security governance documents and contact channels.

Recommendations

  1. Publish comprehensive privacy and cookie policies with clear GDPR compliance statements and consent mechanisms.
  2. Add a dedicated security policy page including incident response procedures and vulnerability disclosure contacts.
  3. Provide explicit contact information including emails and phone numbers for general and security inquiries.
  4. Enhance transparency by including company registration details and WHOIS information if possible.
  5. Regularly audit and update website content to maintain compliance and trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Fronius International
Description
Fronius International is a company operating in the energy sector, providing products and services related to solar energy, battery charging technology, and welding technology.
Key services
Solar inverters, Battery charging technology, Welding technology
Content quality
good
Branding
consistent

Technology

Stack
React, Next.js, CSS Modules
Frameworks
Next.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data detected

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

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. WHOIS data is missing or not publicly available, limiting domain trust verification.
  3. No explicit privacy, cookie, or terms of service policies found in the provided HTML content.
  4. No contact emails or phone numbers explicitly found in the provided content.
  5. Social media links to major platforms are present, indicating active digital presence.
  6. Website uses modern web technologies and good security headers.
  7. No signs of adult or questionable content detected.
  8. No advertising or tracking scripts explicitly detected in the provided content.
Technical notes

Notes

The website is built on a modern technology stack featuring React and Next.js, enabling server-side rendering and good SEO performance. CSS Modules are used for styling, contributing to modular and maintainable code. The site is mobile-optimized and accessible, with semantic HTML and ARIA roles likely implemented. Performance is moderate, with potential for optimization in loading times and resource management. No CMS was explicitly detected, suggesting a custom or proprietary content management approach. Hosting provider details are not disclosed. The technical infrastructure supports a professional digital presence but could benefit from enhanced analytics and marketing tool integration for better user insights.
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. 83/100 +31Low26 findingsView report
  2. 52/100 −2Medium23 findingsView report
  3. 54/100Medium21 findingsView report
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