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Security report for deezer.com

Deezer · Media · France

Medium risk. 2 critical or high findings in SSL/TLS and Security headers.

Security score

71/100

Risk levelMedium

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

Deezer is a well-established global music streaming service founded in 2007, headquartered in Paris, France. It offers a comprehensive platform for music lovers to stream millions of songs, playlists, and podcasts. The company targets a broad audience of general music listeners and operates a subscription and ad-supported business model. Deezer maintains a strong market position with consistent branding and a professional online presence. Technically, the website employs modern web technologies including JavaScript frameworks, Segment analytics, and Survicate surveys, ensuring a fast, mobile-optimized, and accessible user experience. The site uses HTTPS with strong security headers, indicating a mature security posture. Privacy compliance is robust with clear privacy and cookie policies and GDPR adherence. However, the WHOIS data for the domain is unavailable, which is unusual for a major brand and slightly reduces trustworthiness. There is no publicly available explicit security policy or incident response information, which could be improved. Overall, Deezer's website is professional, secure, and user-friendly, with minor gaps in transparency regarding domain registration and security disclosures. Strategic recommendations include publishing detailed security and incident response policies, providing vulnerability disclosure channels, and clarifying domain registration details to enhance trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 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

2 findings 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  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 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 deezer.com

This scan found 12 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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Recommended

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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
0
Security headers
60
Email security
85
DNS health
85
Network security
100
GDPR outside view
95
Average
71

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

Deezer operates in the competitive music streaming market, leveraging a subscription and free ad-supported model to attract a wide user base. Its competitive advantage lies in its extensive music catalog, multi-language support, and global reach. The company targets general consumers interested in music and podcasts, with growth driven by digital adoption and partnerships. Deezer's ecosystem includes social media engagement and integration with various platforms. The absence of parent or subsidiary company data suggests independent operation. The business model focuses on recurring revenue from subscriptions and advertising, with strategic emphasis on user experience and content variety.

Security posture

Deezer demonstrates a strong security posture with HTTPS enforcement and comprehensive security headers. The website avoids exposing sensitive data and employs consent mechanisms for cookies, aligning with GDPR requirements. However, the lack of a published security policy or incident response plan and absence of a vulnerability disclosure program represent gaps in security transparency. The missing WHOIS data raises questions about domain registration transparency but does not directly indicate compromise. Overall, Deezer's security maturity is high, but improvements in policy disclosure and incident readiness communication are recommended.

Recommendations

  1. Publish a detailed security policy and incident response plan on the website.
  2. Implement and publicize a vulnerability disclosure program or security.txt file.
  3. Clarify domain registration details or provide transparency about privacy protection usage.
  4. Add contact information for a Data Protection Officer or security contact.
  5. Continue to monitor and update third-party libraries and tracking tools to avoid vulnerabilities.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Deezer
Description
Discover our streaming app Deezer! Create an account, listen to your music for free and access millions of songs, playlists and podcasts. Sign up for free!
Key services
Music streaming, Playlists, Podcasts, Music discovery
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Segment analytics, Survicate surveys, Bootstrap CSS, Inter font, Deezer brand fonts
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of security headers
  • Consent mechanism for cookies

Analytics and tracking

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

Advertising

Tracking pixels
Segment, Survicate
Marketing tools
Survicate surveys, Segment analytics
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 rich content and professional design
  2. Strong branding and consistent use of company identity
  3. Comprehensive privacy and cookie policies with GDPR compliance
  4. No explicit security policy or incident response information publicly available
  5. WHOIS data unavailable, which is unusual for a major brand
  6. Use of multiple third-party analytics and survey tools
  7. No adult or questionable content detected
  8. No WAF or blocking mechanisms detected
Technical notes

Notes

The website uses a modern tech stack with JavaScript, Segment analytics, and Survicate for user engagement and data collection. It employs Bootstrap CSS and custom Deezer branding fonts for consistent styling. Performance is optimized with preloading fonts and CDN usage for static assets. The site is mobile-optimized and accessible with proper meta tags and SEO-friendly structure. No CMS is explicitly detected, suggesting a custom or proprietary platform. Hosting provider details are not evident from the HTML. Overall, the technical infrastructure supports a fast, reliable, and user-friendly experience with room for enhanced security transparency.
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. 84/100Low22 findingsView report
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