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Security report for flixbus.fr

FlixBus France · Transportation · France

Medium risk. 8 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

59/100

Risk levelMedium

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

FlixBus France operates as a major intercity bus transportation provider, offering affordable travel options across France and Europe with a vast network of over 6,800 destinations in more than 40 countries. The company leverages a digital-first business model with online ticket sales, real-time trip tracking, and a mobile app to enhance customer experience. Flix SE, the parent company, is a recognized leader in the transportation sector with subsidiaries including FlixTrain and Greyhound. The website reflects a mature digital infrastructure with Drupal CMS, CDN hosting, and modern analytics tools such as Datadog RUM, ensuring fast performance and mobile optimization. Security posture is strong with HTTPS enforcement, security headers, and session protections, although explicit incident response contacts and vulnerability disclosure mechanisms are not publicly detailed. Overall, the site is professional, trustworthy, and compliant with GDPR, supporting a broad international audience.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 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

8 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

  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 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 flixbus.fr

This scan found 26 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
15
Email security
75
DNS health
65
Network security
100
GDPR outside view
25
Average
59

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

FlixBus holds a dominant market position in European intercity bus travel, capitalizing on a scalable online platform that integrates ticketing, customer support, and real-time services. Its competitive advantage lies in extensive route coverage, modern fleet amenities, and a strong brand presence supported by multilingual websites and social media engagement. Revenue streams primarily derive from ticket sales and partnerships with agencies. The company targets budget-conscious travelers, including tourists and commuters, with a focus on sustainability and convenience. Strategic partnerships and subsidiaries expand its footprint globally. The website's comprehensive content and legal transparency reinforce its credibility and customer trust.

Security posture

The website demonstrates a high level of security maturity with enforced HTTPS, robust security headers, and the use of advanced monitoring tools like Datadog RUM. User input masking in session replay indicates attention to privacy. However, the absence of publicly available incident response contacts and vulnerability disclosure policies suggests room for improvement in transparency and readiness. No vulnerabilities or exposed sensitive data were detected in the analysis. GDPR compliance is evident through privacy and cookie policies with consent mechanisms. Overall, the security posture is strong but could benefit from enhanced communication of security processes.

Recommendations

  1. Publish clear incident response and abuse contact information on the website.
  2. Implement and publicize a vulnerability disclosure policy or security.txt file.
  3. Provide direct contact details for the Data Protection Officer to enhance GDPR transparency.
  4. Regularly review and audit third-party scripts and libraries for security vulnerabilities.
  5. Enhance user trust by showcasing security certifications or compliance badges.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
FlixBus France
Description
FlixBus offers intercity bus service all over Europe, North America and South America connecting thousands of destinations.
Key services
Bus ticket booking, Real-time trip tracking, Mobile app for booking and notifications, Onboard Wi-Fi and power outlets, Support for mobility reduced persons
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Datadog RUM, Honeycomb Icons, Drupal CMS assets, Cloudfront CDN
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Datadog RUM for monitoring
  • Session cookies with secure and cross-site flags
  • Masking user input in session replay

Analytics and tracking

Services
Datadog RUM
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Adjust
Tracking pixels
Datadog RUM, Pulse by FlixBus
Marketing tools
Datadog RUM, Adjust
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. Strong multilingual support with hreflang tags for many countries
  3. Comprehensive legal and privacy documentation present
  4. Use of modern monitoring and analytics tools
  5. No direct contact emails or phone numbers found on main pages
  6. Social media presence is strong and consistent
  7. No signs of suspicious or malicious content
Technical notes

Notes

The website is built on Drupal CMS with assets served via Amazon Cloudfront CDN, ensuring scalability and performance. It uses modern JavaScript libraries and icons, and integrates Datadog RUM for real-time user monitoring and performance analytics. The site is highly optimized for mobile devices and accessibility, with comprehensive SEO meta tags and multilingual support via hreflang tags. The technical implementation reflects a mature and well-maintained infrastructure with fast loading times and good user experience. Opportunities exist to further modernize by adopting additional security frameworks and improving incident response visibility.
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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