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Security report for magasins-u.com

Coopérative U (ex Système U) · Retail · France

Low risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

76/100

Risk levelLow

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

Magasins U is a major French retail cooperative operating supermarkets and hypermarkets under brands such as Super U, Hyper U, and U Express. The website serves as a comprehensive portal for customers to find local stores, access promotions, participate in loyalty programs, and use various online services including grocery shopping and rentals. The digital infrastructure leverages Adobe Experience Manager CMS, integrates multiple marketing and analytics tools, and implements modern web technologies to deliver a responsive and user-friendly experience. Security posture is strong with HTTPS enforcement and bot protection, though explicit security policies and incident response information are not publicly disclosed. The absence of WHOIS data for the domain is unusual but the website content and branding strongly indicate legitimacy. Overall, the site is professional, well-structured, and compliant with privacy regulations, serving a large retail audience in France.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 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

4 findings rated critical or high. Fix these first.

  1. 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"

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      Third-party services without privacy policy

      Detected services: Facebook, YouTube

      What to do: Document all third-party data sharing in your privacy policy

  3. 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 magasins-u.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
82
Security headers
55
Email security
75
DNS health
80
Network security
100
GDPR outside view
65
Average
76

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

The cooperative business model focuses on retail grocery and related services, targeting French consumers with a broad range of physical and online offerings. Key competitive advantages include a strong loyalty program (Carte U), local store engagement, and diversified services such as vehicle rental and cultural product sales. The partnership ecosystem includes specialized domains for different services, enhancing customer reach and convenience. Growth indicators include active promotions, digital engagement, and mobile app availability. The cooperative's market position is solidified by consistent branding and customer trust signals such as awards and social media presence.

Security posture

The website demonstrates a mature security posture with HTTPS, bot protection via DataDome, and integration of trusted third-party services. However, there is no public disclosure of a formal security policy or incident response plan, which could be improved for transparency. No vulnerabilities or exposed sensitive data were detected in the analysis. Cookie consent mechanisms and privacy policies align with GDPR requirements, supporting compliance. Recommendations include verifying all security headers and publishing security governance documents to enhance trust.

Recommendations

  1. Publish a clear security policy and incident response information on the website.
  2. Verify and implement all recommended HTTP security headers (CSP, X-Frame-Options, etc.).
  3. Regularly audit third-party libraries and update to mitigate vulnerabilities.
  4. Enhance contact information availability for customer support and security reporting.
  5. Investigate and clarify the domain WHOIS data absence to ensure transparency.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Coopérative U (ex Système U)
Description
Magasins U is a French retail cooperative offering supermarkets and hypermarkets under brands such as Super U, Hyper U, and U Express. The website provides information about products, promotions, loyalty programs (Carte U), online shopping services, and local store locations.
Key services
Physical supermarkets and hypermarkets, Online grocery shopping (Courses U), Loyalty program (Carte U), Vehicle and equipment rental (U Location), High-tech and multimedia products (U Techno), Photo services (U Photos), Ticketing services (U Billetterie), Book and cultural product sales (U Culture)
Content quality
good
Branding
consistent

Technology

Stack
Adobe Helix RUM, Abtasty, DataDome bot protection, TagCommander, Facebook SDK, YouTube embeds, AEM (Adobe Experience Manager) CMS
Frameworks
Adobe Experience Manager
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of DataDome for bot protection
  • Facebook SDK loaded securely
  • Cookie consent banner implemented

Analytics and tracking

Services
Adobe Helix RUM, TagCommander
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Abtasty, TagCommander
Tracking pixels
Facebook Pixel
Marketing tools
Abtasty, TagCommander, DataDome
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and interactive features.
  2. Strong branding and consistent design aligned with Coopérative U.
  3. Comprehensive cookie and privacy policies with consent mechanisms.
  4. Multiple external service integrations for marketing, analytics, and social media.
  5. No explicit contact emails or phone numbers found on main pages.
  6. WHOIS data missing, which is unusual for a .com domain of this scale.
  7. No security policy or incident response information publicly available.
  8. Good SEO and accessibility features implemented.
  9. No adult or questionable content detected.
Technical notes

Notes

The site uses Adobe Experience Manager CMS, supported by modern JavaScript libraries and third-party integrations such as Abtasty for marketing and DataDome for bot protection. Performance is moderate with good mobile optimization and accessibility features. SEO is well implemented with meta tags, Open Graph, and structured data for search engines. The site uses multiple external domains for specialized services, indicating a modular architecture. Opportunities exist to improve hosting transparency and optimize loading times further.
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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