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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 globally recognized company specializing in innovative solutions in welding technology, solar energy, and battery charging. The company targets industrial clients and professionals in energy sectors, offering high-efficiency products and services. Their market position is strong, supported by ISO certifications and a consistent brand presence. The website reflects a mature digital infrastructure built on modern technologies such as Next.js and React, ensuring fast performance and excellent mobile optimization. Security posture is robust with HTTPS enforcement, comprehensive security headers, and no detected vulnerabilities. Privacy compliance is well addressed with clear policies and consent mechanisms. Overall, the website and business demonstrate high professionalism and trustworthiness, although WHOIS data is unavailable, which is likely a registry limitation rather than a privacy concern.

Scanned

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

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 18 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 operates primarily in the energy and manufacturing sectors, focusing on welding and solar energy solutions. Their business model is B2B, serving industrial and professional markets worldwide. The company maintains a strong global presence with localized websites for multiple countries. Revenue streams likely include product sales, service contracts, and technology licensing. The company benefits from strategic partnerships and certifications that enhance market credibility. Growth indicators include a well-maintained digital presence and comprehensive customer support infrastructure. The absence of WHOIS data is unusual but does not detract from the company's established reputation.

Security posture

The website demonstrates a high level of security maturity, with HTTPS enforced and multiple security headers implemented. No exposed sensitive data or vulnerable libraries were detected. Forms on the site include proper validation, reducing risk of injection or data leakage. However, explicit security policies and incident response information are not publicly available, which could be improved to enhance transparency. GDPR compliance is evident through privacy and cookie policies, and a named Data Protection Officer is provided. No vulnerability disclosure program or security.txt file was found, representing an area for potential enhancement. Overall, the security posture is strong with minor gaps in transparency and disclosure.

Recommendations

  1. Publish a dedicated security policy and incident response plan on the website.
  2. Implement and publicize a vulnerability disclosure program or security.txt file.
  3. Enhance transparency on data retention and processing practices within privacy documentation.
  4. Regularly audit third-party scripts and tracking tools to minimize privacy risks.
  5. Maintain updated WHOIS information or clarify domain registration details to improve trust signals.

Contact details published on the site

Addresses
Legal name
Fronius International GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Fronius International
Description
New, innovative solutions in the fields of welding, solar energy and battery chargers with perfect efficiency in every Fronius product.
Key services
welding technology, solar energy solutions, battery chargers
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, CSS Modules, Google Fonts, SVG icons
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Secure cookies
  • No exposed sensitive data in HTML
  • Proper form validation

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

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. Content is professionally presented and relevant to industrial and energy sectors.
  3. Strong security headers and HTTPS usage observed.
  4. Privacy and cookie policies are present and comprehensive.
  5. No suspicious or malicious content detected.
  6. WHOIS data is unavailable, which is unusual but does not impact website trustworthiness significantly.
  7. Multiple localized versions of the site indicate global presence.
Technical notes

Notes

The website is built using modern web technologies including React and Next.js, which provide server-side rendering and optimized performance. CSS Modules are used for styling, ensuring modular and maintainable code. The site is mobile-optimized with responsive design and accessibility features such as focus outlines and semantic HTML. SEO is supported by proper meta tags, Open Graph data, and canonical links. Performance is fast with preloading of critical CSS and optimized images. No CMS was detected, suggesting a custom or headless approach. Hosting provider details are not explicit but the site uses HTTPS with strong SSL configuration. Overall, the technical infrastructure is modern, scalable, and well-implemented.
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 +31Low23 findingsView report
  2. 52/100 −2Medium23 findingsView report
  3. 54/100Medium21 findingsView report
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