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Security report for flixbus.lt

Flix SE · Transportation · Lithuania

Medium risk. 11 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

50/100

Risk levelMedium

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

Flix SE operates the FlixBus platform, providing affordable and extensive bus travel services across Lithuania and Europe. The website offers a comprehensive user experience with multilingual support, real-time travel tracking, and mobile app integration. The company holds a strong market position as a leading European transportation provider with a broad route network and modern amenities such as Wi-Fi and power outlets on buses. Technically, the website is built on modern frameworks like React and Drupal CMS, leveraging CDN and advanced analytics tools to ensure fast performance and good SEO. Security posture is strong with HTTPS, security headers, and cookie consent mechanisms, though explicit security policies and incident response contacts are not publicly disclosed. The absence of WHOIS data limits domain trust verification but does not detract from the professional and trustworthy presentation of the site. Overall, FlixBus.lt is a well-established, secure, and user-friendly platform serving a large customer base in the transportation sector.

Scanned

This is an earlier scan of flixbus.lt. View the latest report

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

11 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 flixbus.lt

This scan found 29 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
40
DNS health
60
Network security
100
GDPR outside view
10
Average
50

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention flixbus.lt, from OffSeq Breach.

Total records
2
Employees
0
Customers
2
Third parties
0
Weak passwords
0%

1 subdomain affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for flixbus.lt.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

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Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Flix SE's business model centers on digital ticket sales and transportation services, targeting travelers seeking cost-effective bus journeys across Europe. The company benefits from a large user base exceeding 90 million travelers, supported by a robust partnership and subsidiary ecosystem including FlixTrain and Greyhound. The platform's multilingual capabilities and extensive route offerings position it competitively in the European transport market. Revenue streams likely include ticket sales, ancillary services like seat reservations, and mobile app engagement. The company maintains a strong brand presence and leverages digital marketing and analytics to optimize customer acquisition and retention. Strategic growth is supported by continuous expansion of routes and service quality enhancements.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, comprehensive security headers, and a cookie consent management system compliant with GDPR. No critical vulnerabilities or exposed sensitive data were detected. However, the lack of a publicly available security policy or incident response contact reduces transparency and may impact user trust in security matters. The use of third-party analytics and marketing scripts is managed with consent mechanisms, mitigating privacy risks. Recommendations include publishing explicit security and incident response policies and considering a vulnerability disclosure program to enhance security culture and user confidence.

Recommendations

  1. Publish a dedicated security policy page detailing security practices and user protections.
  2. Provide clear incident response contact information to facilitate vulnerability reporting and user concerns.
  3. Implement and publicize a vulnerability disclosure or security.txt file to encourage responsible reporting.
  4. Enhance visibility of official contact information for customer support and security inquiries.
  5. Regularly review and update third-party scripts and dependencies to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Flix SE
Description
Nebrangios kelionės autobusu Europoje su daugiau nei 400 000 maršrutų kasdien į 2 500 miestų 35 šalyse. Siūlomas nemokamas atšaukimas likus 30 dienų iki išvykimo, Wi-Fi ir elektros lizdai autobuse.
Key services
Autobusų bilietų pardavimas, Kelionių planavimas, Užsakymų valdymas, Kelionės sekimas, Mobiliosios programėlės paslaugos
Content quality
excellent
Branding
consistent

Technology

Stack
React, Honeycomb UI, Google Tag Manager, Usercentrics CMP, Datadog RUM, Cloudfront CDN
Frameworks
React
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Content Security Policy present
  • Cookie consent mechanism implemented
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Analytics (via GTM), Datadog RUM
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Adtriba
Tracking pixels
Datadog RUM, Usercentrics CMP
Marketing tools
Adtriba
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 interactive features.
  2. Strong multi-language support with hreflang tags for many countries.
  3. Comprehensive privacy and cookie policies with consent management.
  4. No direct contact emails or phone numbers found on main pages.
  5. Social media presence is well integrated with official accounts.
  6. Modern frontend technologies and CDN usage ensure good performance.
  7. No security policy or incident response info publicly available.
  8. WHOIS data is missing or inaccessible, limiting domain trust verification.
Technical notes

Notes

The website employs a modern technology stack including React for frontend UI, Drupal CMS for content management, and Amazon Cloudfront CDN for content delivery, ensuring fast load times and scalability. Accessibility and SEO best practices are well implemented, with responsive design and comprehensive meta tags. Analytics and marketing tools such as Google Tag Manager, Datadog RUM, and Usercentrics CMP are integrated with user consent management. The site architecture supports multilingual content and dynamic user interactions. Technical risks are minimal, though continuous monitoring of third-party dependencies is advised to prevent security issues.
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. 49/100High39 findingsView report
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