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Security report for clarks.com

C. & J. Clark International Limited · Retail · United Kingdom

Medium risk. 3 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

66/100

Risk levelMedium

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

Clarks is a well-established global footwear brand with a rich history dating back to 1825. The company offers a wide range of footwear products for men, women, and children, including various collections such as Originals™, casual, smart, and seasonal styles. Their online presence is supported by a comprehensive e-commerce platform that integrates modern technologies like React and Next.js, ensuring a fast and responsive user experience across devices. The website features clear navigation, detailed product categorization, and multiple payment options, including popular services like Klarna and PayPal. Technically, the site employs a robust infrastructure with performance monitoring via New Relic and marketing tools such as Klaviyo and OneTrust for privacy compliance. The use of HTTPS, security headers, and cookie consent mechanisms reflects a strong security posture. No critical vulnerabilities or exposed sensitive data were detected, indicating adherence to best practices in web security. Overall, the website demonstrates a high level of professionalism, technical maturity, and compliance with privacy regulations such as GDPR. The domain registration details align with the company's claims, reinforcing its legitimacy. Strategic recommendations include implementing a public vulnerability disclosure policy and enhancing transparency around data retention and incident response. This analysis concludes that Clarks maintains a secure, user-friendly, and trustworthy online platform that supports its retail operations effectively.

Scanned

NIS2 and GDPR posture

GDPR outside view
63/ 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.

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

  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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  3. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

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

Keep watching clarks.com

This scan found 14 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.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
0
Security headers
70
Email security
75
DNS health
85
Network security
100
GDPR outside view
63
Average
66

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

Clarks holds a strong market position as a leading footwear retailer with a legacy of nearly two centuries. Its business model focuses on direct-to-consumer sales through both physical stores and a sophisticated e-commerce platform. The company targets a broad audience encompassing men, women, and children, offering diverse product lines to cater to various customer preferences. Revenue streams include online sales, in-store purchases, and partnerships with payment providers like Klarna. The presence of localized content and multiple language options indicates a strategy aimed at international markets, particularly across Europe and North America. Clarks' partnership ecosystem includes marketing, analytics, and privacy management services, enhancing its operational capabilities. The brand's consistent and professional content, combined with trust signals such as clear policies and social media engagement, supports customer confidence and loyalty.

Security posture

The website exhibits a mature security posture with enforced HTTPS, comprehensive security headers, and a cookie consent mechanism aligned with GDPR requirements. The absence of exposed sensitive information and the use of reputable third-party services for analytics and marketing reduce the risk of data breaches. However, the site lacks a publicly accessible security policy or incident response contact, which are important for transparency and rapid response to security events. No known vulnerabilities or outdated libraries were detected in the provided content. The overall security score is high, but improvements in disclosure and incident management documentation would further strengthen the security culture and compliance.

Recommendations

  1. Publish a security.txt file to facilitate responsible vulnerability disclosure.
  2. Provide clear incident response procedures and contact information on the website.
  3. Enhance transparency regarding data retention policies and user data handling.
  4. Regularly audit third-party scripts and dependencies for security vulnerabilities.
  5. Implement ongoing security awareness and training to maintain a strong security culture.

Contact details published on the site

Addresses
Legal name
C. & J. Clark International Limited
Registration number
141015
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
C. & J. Clark International Limited
Description
Clarks is a global footwear brand offering shoes, sandals, sneakers, and boots for men, women, and kids. They provide a wide range of styles including Originals™, casual, smart, and seasonal collections.
Key services
Online shoe retail, Store locator, Order tracking, Customer service, Newsletter subscription
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, OneTrust, Klaviyo, New Relic
Frameworks
Next.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of CSP
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Secure forms with validation

Analytics and tracking

Services
Google Analytics (via GTM), New Relic, Klaviyo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Klaviyo, New Relic
Marketing tools
Klaviyo, OneTrust
Transparency
good

Site quality

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

Key observations

  1. The website is a professionally designed e-commerce platform for Clarks footwear.
  2. Comprehensive navigation with detailed category and subcategory structures.
  3. Strong privacy and cookie policies with active consent mechanisms.
  4. Multiple payment options including Klarna, PayPal, Visa, MasterCard, Amex, Apple Pay, Diners.
  5. Active social media presence on Facebook, Instagram, TikTok, and YouTube.
  6. Use of modern web technologies and performance monitoring tools.
  7. No signs of WAF blocking or security challenges.
  8. No exposed sensitive data or obvious security vulnerabilities in the HTML content.
Technical notes

Notes

The website is built on a modern technology stack including React and Next.js, leveraging server-side rendering for performance and SEO benefits. It uses Amplience as a CMS for content management and Cloudflare for CDN and security services. The integration of Google Tag Manager, Klaviyo, and OneTrust indicates a mature approach to marketing, analytics, and privacy compliance. The site is optimized for mobile devices with responsive design and accessibility features such as skip links and ARIA labels. Performance monitoring through New Relic suggests active management of site health. Overall, the technical infrastructure is robust, scalable, and aligned with current best practices, minimizing technical debt and supporting business continuity.
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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