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Security report for sfr.fr

SFR · Telecommunications · France

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

63/100

Risk levelMedium

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

SFR is a major French telecommunications company offering a wide range of services including fiber and ADSL internet, 5G mobile plans, smartphones, TV packages, and home security solutions. The website reflects a mature digital presence with comprehensive product information, customer reviews, and clear navigation tailored to both consumers and business clients. Technically, the site uses modern web technologies including Django, asynchronous JavaScript, and optimized media formats, ensuring good performance and mobile responsiveness. Security posture is solid with HTTPS enforced and no obvious vulnerabilities, though some security headers could be enhanced and a security.txt file added. Privacy compliance is well addressed with clear policies and consent mechanisms. WHOIS data is unavailable due to AFNIC restrictions, which slightly impacts trust but is typical for French domains. Overall, the site is professional, trustworthy, and well-optimized for its market.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

6 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

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • 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

  2. 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"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

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Keep watching sfr.fr

This scan found 25 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
25
Email security
70
DNS health
70
Network security
100
GDPR outside view
40
Average
63

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

SFR holds a strong market position in France's telecommunications sector, supported by its parent company Altice France. The business model focuses on bundled offerings combining internet, mobile, TV, and home security, targeting a broad customer base from individual consumers to enterprises. The company leverages partnerships for financing and payment solutions and maintains active engagement through social media and customer feedback. Growth indicators include new product launches like the iPhone 17 Pro and advanced internet boxes. The website's content and structure support effective customer acquisition and retention strategies.

Security posture

The website demonstrates a mature security posture with HTTPS and modern web standards. No exposed sensitive data or vulnerable libraries were detected. However, explicit security headers such as Strict-Transport-Security and X-Content-Type-Options are not clearly present and should be implemented to enhance protection. The absence of a published security.txt and incident response contact limits transparency for vulnerability reporting. Privacy policies are comprehensive and GDPR compliant, indicating good data protection practices. Overall, the security maturity is good but could be improved with formalized vulnerability disclosure and enhanced HTTP headers.

Recommendations

  1. Implement and enforce additional security headers including Strict-Transport-Security, X-Content-Type-Options, X-Frame-Options, and Referrer-Policy.
  2. Publish a security.txt file at the root domain to facilitate vulnerability disclosure and improve transparency.
  3. Provide explicit incident response contact information on the website to enhance trust and readiness.
  4. Regularly audit and update third-party scripts to mitigate risks from external dependencies.
  5. Continue to monitor and update privacy and cookie policies to maintain GDPR compliance and user trust.

Contact details published on the site

Legal name
SFR SA
Registration number
RCS Paris N°343 059 564
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SFR
Description
SFR offers internet and mobile services including fiber and ADSL internet boxes, 5G mobile plans, smartphones, TV bouquets, and home security solutions.
Key services
Internet fiber and ADSL, Mobile 5G plans, Smartphones and accessories, TV services and bouquets, Home security solutions
Content quality
excellent
Branding
consistent

Technology

Stack
Django (indicated by djangoUtils), JavaScript, CSS3, HTML5, WebP images, Video streaming (HTML5 video), Font loading with WOFF2, JSON-LD structured data
Frameworks
Django
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of modern font formats with crossorigin
  • Async loading of scripts
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics (implied by scripts), genki.sfr.fr analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
genki.sfr.fr
Tracking pixels
genki.sfr.fr
Marketing tools
Google Ads (AW-957245303)
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and fully functional
  2. Comprehensive product and service offerings for telecommunications
  3. Strong privacy and cookie policies with consent mechanisms
  4. No signs of phishing, malware, or suspicious content
  5. WHOIS data unavailable, typical for French domains managed by AFNIC with privacy restrictions
  6. Multiple official social media and partner links present
  7. Good SEO and accessibility practices observed
  8. No explicit security.txt or incident response info found
Technical notes

Notes

The website is built on a Django backend with extensive use of JavaScript and CSS for dynamic and responsive user experience. It uses modern font formats (WOFF2), optimized images (WebP), and HTML5 video elements for rich media content. The site is mobile-optimized with responsive design and accessibility features such as ARIA labels and keyboard navigation support. SEO is supported by meta tags, Open Graph, and JSON-LD structured data. Performance is moderate with asynchronous script loading but could benefit from further optimization. Hosting details are not explicit but the use of AFNIC and static.s-sfr.fr domains suggests professional infrastructure. Overall, the technical implementation is robust and modern.
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. 75/100Medium4 findings · partial scanView report
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