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Security report for on.com

On · Retail · Switzerland

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

Security score

86/100

Risk levelLow

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

On is a premium Swiss brand specializing in performance running shoes and athletic apparel, targeting runners and sports enthusiasts globally. The company leverages a patented cushioning technology that activates upon landing, positioning itself as an innovator in the athletic footwear market. The website reflects a mature e-commerce platform with a strong brand presence and professional design, supporting direct sales and customer engagement. Technically, the site utilizes modern JavaScript frameworks, Contentful CMS, and integrates Google Analytics and Tag Manager for data-driven marketing and performance tracking. Security posture is strong with HTTPS enforcement and appropriate security headers, though explicit security policies and incident response contacts are not publicly disclosed. Privacy compliance is well addressed with comprehensive policies and cookie consent mechanisms. The absence of WHOIS data slightly reduces trust but is mitigated by the professional site and brand reputation. Overall, the site demonstrates a high level of digital maturity and business credibility.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 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 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

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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
75
Security headers
85
Email security
75
DNS health
80
Network security
100
GDPR outside view
100
Average
86

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 on.com, from OffSeq Breach.

Total records
2,062,314
Employees
0
Customers
2,062,194
Third parties
120
Weak passwords
13%

206 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 on.com.

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

Technical appendix

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

Business context

Business profile

On operates in the retail sector with a focus on premium performance running shoes and apparel. Its business model centers on direct-to-consumer e-commerce complemented by physical retail presence. The brand targets active individuals and athletes seeking innovative footwear technology. Market positioning is strong within the premium segment, leveraging Swiss engineering and patented technology as competitive advantages. The company maintains a consistent branding strategy and uses multiple social media channels for marketing and customer engagement. Partnerships with advertising networks like Google DoubleClick and marketing tools such as Userback support its digital marketing efforts. The company appears to be large in size with a global reach, though specific financials and founding year are not disclosed. The website content and structure support a seamless shopping experience, reinforcing its market position.

Security posture

The website exhibits a robust security posture with HTTPS enforced and multiple security headers implemented, including HSTS, CSP, and X-Frame-Options. No exposed sensitive data or vulnerable libraries were detected in the HTML content. Forms appear to be securely implemented with appropriate input types. However, the absence of a publicly available security policy or incident response contact information is a gap in transparency and readiness. There is no evidence of a vulnerability disclosure program or security.txt file. Privacy policies are comprehensive and GDPR compliant, indicating good data protection practices. Overall, the security maturity is high but could be improved by publishing explicit security governance documents and incident response procedures.

Recommendations

  1. Publish a dedicated security policy page outlining security governance and controls.
  2. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Enhance transparency by including data retention policies and detailed privacy compliance statements.
  5. Regularly review and update third-party scripts and dependencies to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
On AG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
On
Description
Born in the Swiss Alps, On running shoes feature the first patented cushioning system which is activated only when you need it - during the landing.
Key services
Online retail of running shoes, Online retail of sports clothing, Customer support and product information
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Google Analytics, Contentful CMS, Swiper Carousel, Google Identity Services
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data in HTML
  • Secure forms with proper input types

Analytics and tracking

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

Advertising

Ad networks
Google DoubleClick
Marketing tools
Userback
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 challenge.
  2. Professional e-commerce site for a premium Swiss running shoe brand.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. No direct security policy or incident response info published.
  5. WHOIS data unavailable, possibly due to privacy or query limitations.
  6. Uses modern web technologies and analytics tools.
  7. No suspicious or malicious content detected.
Technical notes

Notes

The website is built using modern web technologies including JavaScript frameworks likely Vue.js or Nuxt.js, and Contentful CMS for content management. It integrates Google Analytics and Tag Manager for analytics and marketing. The site is well optimized for performance and mobile responsiveness, with fast loading times and good accessibility features. The use of Swiper for carousels and Google Identity Services for authentication indicates a mature technical stack. No CMS vulnerabilities or outdated libraries were detected. Hosting provider details are not explicit but the site uses CDN resources from trusted providers. Technical debt appears minimal, and the site is well maintained with consistent updates and modern best practices.
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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