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Security report for on-running.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 Swiss-based company specializing in performance running shoes and sports clothing, leveraging patented cushioning technology. The website serves as a professional e-commerce platform targeting athletes and running enthusiasts globally. The brand is well-established with a strong market presence in the sports retail sector. Technically, the website employs modern frameworks such as Vue.js/Nuxt.js and integrates with Contentful CMS, Google Analytics, and advertising platforms like Google Ads and Bing Ads, indicating a mature digital infrastructure. Security posture is robust with HTTPS enforcement and standard security headers, though the absence of public WHOIS data and security.txt files suggests room for improvement in transparency and incident response readiness. Overall, the site is professionally designed, mobile-optimized, and compliant with GDPR, providing a trustworthy user experience.

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

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

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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

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 primarily in the retail sector, focusing on high-performance running footwear and apparel. The company targets a niche audience of athletes and fitness enthusiasts, leveraging innovation in product design to differentiate itself. Revenue streams are mainly from direct online sales and possibly retail partnerships. The website's integration with multiple advertising and analytics platforms reflects a data-driven marketing approach. The absence of explicit parent or subsidiary company information suggests On AG operates as an independent entity. The brand's consistent and high-quality digital presence supports its competitive positioning in the global sportswear market.

Security posture

The website demonstrates a good security maturity level with HTTPS, security headers, and secure form handling. No critical vulnerabilities or exposed sensitive data were detected. However, the lack of a public vulnerability disclosure policy or security.txt file and no visible incident response contacts indicate potential gaps in transparency and readiness for security incidents. Compliance with GDPR is evident through privacy and cookie policies with consent mechanisms. The use of multiple third-party scripts necessitates ongoing monitoring to mitigate supply chain risks. Overall, the security posture is strong but could benefit from enhanced disclosure and incident management practices.

Recommendations

  1. Publish a security.txt file and vulnerability disclosure policy to improve transparency and encourage responsible reporting.
  2. Provide clear incident response contact information, such as a dedicated security or abuse email address.
  3. Regularly audit and update third-party scripts and dependencies to minimize vulnerabilities.
  4. Enhance business credibility by including more detailed company registration and legal information on the website.
  5. Maintain and update privacy and cookie policies to reflect evolving regulations and best practices.

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, Bing Ads, Contentful CMS, Swiper Carousel
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data detected
  • Secure forms with proper input handling

Analytics and tracking

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

Advertising

Ad networks
Google Ads, Bing Ads, DoubleClick
Tracking pixels
Userback
Marketing tools
Sail Track, Sail Personalize
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 modern e-commerce site for Swiss running shoes brand.
  3. Strong use of modern web technologies and analytics.
  4. Comprehensive privacy and cookie policies with consent mechanisms.
  5. No direct phone numbers or physical addresses found in the provided HTML snippet.
  6. WHOIS data unavailable, which is unusual but not necessarily suspicious given the brand.
Technical notes

Notes

The website is built on a modern tech stack including Vue.js/Nuxt.js framework and Contentful CMS, ensuring scalability and content management efficiency. It uses advanced front-end techniques such as modulepreload for performance optimization and integrates with major analytics and advertising platforms. The site is mobile-optimized with responsive design and accessibility features, contributing to excellent user experience. Performance is fast with efficient resource loading. However, hosting provider details are not explicitly identified, and WHOIS data is missing, which could be addressed for better transparency. Overall, the technical infrastructure supports a robust and professional e-commerce platform.
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. 80/100Low24 findingsView report
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