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Security report for prisonnier-quantique.fr

CEA · Education · France

Medium risk. 10 critical or high findings in GDPR outside view, Email security and 1 other check.

Security score

56/100

Risk levelMedium

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

Le Prisonnier quantique is an educational interactive game developed and hosted by the French public research organization CEA. It aims to promote scientific and technical culture through a free browser-based adventure game targeting a general audience including students and educators. The website is well-branded with official CEA logos and partnerships, providing a trustworthy platform for educational content. Technically, the site uses standard web technologies with responsive design and integrates Matomo analytics for privacy-conscious user tracking. Security posture is adequate with HTTPS and no visible vulnerabilities, though security headers and explicit cookie consent mechanisms are missing. Contact information is limited to official CEA email addresses, supporting legitimacy but lacking phone or physical address details. Overall, the site is professional, secure, and suitable for its educational mission.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 100 · Critical
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

10 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

  2. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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';…

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

Keep watching prisonnier-quantique.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
100
Security headers
15
Email security
40
DNS health
70
Network security
100
GDPR outside view
10
Average
56

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 project is positioned as a niche educational tool within the science and technology outreach sector, leveraging CEA's reputation and partnerships such as Réseau Canopé. The free-to-play model supported by a public institution focuses on cultural dissemination rather than commercial revenue. The target audience includes students, educators, and science enthusiasts. The website's partnership ecosystem and official branding enhance credibility and market presence. Growth potential lies in expanding educational content and engagement through interactive media.

Security posture

The website demonstrates a moderate security maturity level with enforced HTTPS and no exposed sensitive data. However, the absence of security headers like Content-Security-Policy and lack of a published security or incident response policy indicate room for improvement. No vulnerability disclosure or security.txt file is present, which could hinder coordinated vulnerability reporting. Privacy compliance is partial, with a privacy policy present but no cookie consent mechanism. Overall, the security posture is adequate for an educational site but should be enhanced to meet best practices and regulatory expectations.

Recommendations

  1. Implement comprehensive security headers (CSP, X-Frame-Options, X-Content-Type-Options) to mitigate common web attacks.
  2. Add a cookie consent banner to comply fully with GDPR and inform users about tracking.
  3. Publish explicit security and incident response policies including contact channels for vulnerability reporting.
  4. Consider adding a security.txt file to facilitate responsible vulnerability disclosure.
  5. Enhance accessibility features and conduct regular security audits to maintain and improve security posture.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CEA
Description
Le Prisonnier quantique est un jeu vidéo gratuit créé par le CEA pour diffuser la culture scientifique et technique. Le jeu propose une aventure interactive éducative autour des sciences et technologies, ciblant un public large incluant jeunes et enseignants.
Key services
Educational interactive game, Science and technology dissemination, Teacher resources
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, Matomo Analytics
Platforms
Web browser, Mobile (responsive design with mobile.css)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • No visible sensitive data exposure
  • No forms with direct input fields detected

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Matomo
Transparency
basic

Site quality

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

Key observations

  1. Website is an official educational game by CEA
  2. Content is fully accessible with no blocking or WAF challenges
  3. No explicit privacy or cookie banner found, but privacy policy page exists
  4. Contact information is limited to emails, no phone or physical address found
  5. No visible security headers detected in HTML content
  6. Use of Matomo analytics indicates privacy-conscious tracking
  7. No forms with user input fields detected on main page
  8. Mobile optimization is addressed via separate CSS
  9. Social media sharing links present for Facebook, Twitter, Discord
  10. No terms of service or vulnerability disclosure policy found
Technical notes

Notes

The website is built with standard HTML5, CSS, and JavaScript, with responsive design adjustments for mobile devices. It uses Matomo for analytics, indicating a preference for privacy-friendly tracking. Hosting appears to be managed by CEA with dedicated name servers. Performance is moderate with no major issues detected, though no advanced frameworks or CMS are identified. The site could benefit from modern frontend frameworks and improved accessibility compliance. No CMS or third-party plugins with known vulnerabilities were detected, reducing technical risk. Overall, the technical infrastructure is stable but could be modernized for enhanced performance and maintainability.
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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