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Security report for wienerlinien.at

Wiener Linien · Transportation · Austria

Low risk. 1 critical or high finding in SSL/TLS.

Security score

87/100

Risk levelLow

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

Wiener Linien operates as the primary public transportation provider in Vienna, Austria, offering services including subway (U-Bahn), tram (Bim), bus, and alternative mobility options. The website clearly targets residents and visitors of Vienna seeking reliable and comprehensive transit solutions. The business is positioned as an essential transportation entity with a large operational scale and consistent branding. Technically, the website employs modern JavaScript frameworks and integrates advanced analytics and monitoring tools such as Dynatrace and Piwik PRO, indicating a mature digital infrastructure. Security posture is strong with HTTPS enforcement and standard security headers, though explicit privacy and terms of service documentation are not evident in the provided content. Overall, the site is professional, trustworthy, and safe for general audiences.

Scanned

This is an earlier scan of wienerlinien.at. View the latest report

NIS2 and GDPR posture

GDPR outside view
100/ 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

1 finding 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.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

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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
67
Security headers
85
Email security
85
DNS health
85
Network security
100
GDPR outside view
100
Average
87

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

Wiener Linien holds a dominant market position in Vienna's public transportation sector, providing multiple transit modes and expanding alternative mobility offerings. The business model focuses on public service with a large user base. The website reflects a well-established organization with consistent branding and clear service descriptions. While direct contact details are not visible in the analyzed content, the domain and WHOIS data confirm legitimacy and alignment with the claimed entity. The company leverages analytics for user behavior insights and performance monitoring, supporting continuous improvement and customer experience optimization.

Security posture

The website demonstrates a solid security foundation with HTTPS enabled and multiple security headers such as Strict-Transport-Security, X-Content-Type-Options, X-Frame-Options, and Content-Security-Policy. The presence of a cookie consent mechanism aligns with privacy best practices. No vulnerabilities or exposed sensitive data were detected in the analyzed content. However, the absence of publicly available security policies, incident response contacts, or vulnerability disclosure information suggests room for improvement in transparency and readiness. The security score is high but could be enhanced by publishing comprehensive security and privacy documentation.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service accessible from the website footer or main navigation.
  2. Provide clear contact information including a dedicated security or abuse email address for incident reporting.
  3. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Enhance website accessibility features to improve inclusivity and compliance with standards.
  5. Increase transparency around data retention policies and user privacy controls to strengthen GDPR compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Wiener Linien
Description
Wir halten Wien mobil. Mit U-Bahn, Bim, Bus und einem wachsenden Angebot alternativer Mobilitätsformen bieten wir mobile Freiheit für Wien.
Key services
U-Bahn (subway), Bim (tram), Bus, Alternative mobility offerings
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Dynatrace Real User Monitoring, Piwik PRO analytics
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • Use of security headers

Analytics and tracking

Services
Piwik PRO, Dynatrace Real User Monitoring
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Piwik PRO, Dynatrace RUM
Marketing tools
Piwik PRO, Dynatrace
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges
  2. No explicit privacy policy or terms of service pages found in the provided content
  3. Cookie consent mechanism is implemented with tracking opt-in/out
  4. No direct contact emails or phone numbers found in the HTML content
  5. Strong use of analytics and monitoring tools (Dynatrace, Piwik PRO)
  6. Good HTTPS and security header implementation
  7. Content is relevant to public transportation in Vienna
  8. No adult or questionable content detected
Technical notes

Notes

The website uses a modern JavaScript-based front end with integration of Dynatrace Real User Monitoring and Piwik PRO analytics for performance and user behavior tracking. The site is mobile-optimized with responsive design elements. Security headers and HTTPS configuration are well implemented, contributing to a secure browsing experience. Performance is moderate, with potential for optimization in loading speed and accessibility. No CMS or hosting provider details were explicitly detected. The technical infrastructure supports a reliable and professional user experience but could benefit from enhanced SEO and accessibility improvements.
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. 86/100Low21 findingsView report
  2. 25/100Critical4 findings · partial scanView report
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