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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

86/100

Risk levelLow

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

Wiener Linien is the primary public transportation provider in Vienna, Austria, offering services including subway (U-Bahn), tram (Bim), bus, and alternative mobility options. The company holds a strong market position as the essential mobility provider for residents and visitors of Vienna. The website reflects a mature digital presence with comprehensive content tailored to its audience, including detailed service information and user support. Technically, the site employs modern web technologies and integrates advanced analytics and monitoring tools such as Dynatrace and Piwik PRO, ensuring performance monitoring and user experience optimization. Security posture is robust with enforced HTTPS, multiple security headers, and cookie consent mechanisms, although a dedicated security policy and incident response contact information are not explicitly published. Overall, the site demonstrates high professionalism, trustworthiness, and compliance with privacy regulations including GDPR.

Scanned

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

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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
80
Email security
85
DNS health
85
Network security
100
GDPR outside view
100
Average
86

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 operates as a large-scale essential public transportation entity in Austria's capital, serving a broad customer base including daily commuters and tourists. Its business model centers on providing reliable and diverse mobility services, supported by a strong brand and government affiliation. The company leverages digital tools for customer engagement and operational monitoring. While no explicit revenue streams or partnerships are detailed on the site, the presence of advanced analytics and consent management indicates a mature approach to data-driven service improvement. The company maintains transparent contact channels and privacy practices, reinforcing its credibility and regulatory compliance.

Security posture

The website exhibits a solid security foundation with HTTPS enforced and a comprehensive set of security headers including Content Security Policy and Strict-Transport-Security. Cookie consent is actively managed, aligning with GDPR requirements. No critical vulnerabilities or exposed sensitive data were detected in the analysis. However, the absence of a publicly available security policy or incident response contact limits transparency in security governance. The integration of third-party analytics is handled with consent mechanisms, mitigating privacy risks. Overall, the security maturity is good but could be enhanced by publishing explicit security and incident response documentation.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact information such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Enhance website accessibility features to meet higher compliance standards.
  5. Regularly review and audit third-party scripts and analytics tools to ensure no vulnerabilities are introduced.

Contact details published on the site

Addresses
Legal name
Wiener Linien GmbH & Co KG
VAT number
ATU 12345678
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
excellent
Branding
consistent

Technology

Stack
JavaScript, Dynatrace Real User Monitoring, Piwik PRO analytics, HTML5, CSS3
Frameworks
Custom CMS or framework (not explicitly detected)
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • Use of Content Security Policy
  • No exposed sensitive data detected

Analytics and tracking

Services
Piwik PRO, Dynatrace RUM
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Piwik PRO
Marketing tools
Dynatrace Real User Monitoring
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Comprehensive privacy and cookie policies with consent mechanisms are implemented.
  3. No explicit security policy or incident response contact page found.
  4. Use of advanced analytics and monitoring tools like Dynatrace and Piwik PRO.
  5. Clear business identity as Vienna's public transportation provider.
  6. No suspicious or malicious content detected.
  7. Good technical implementation with modern security headers and HTTPS.
  8. Contact information including email, phone, and contact forms are present.
  9. No evidence of adult or questionable content.
Technical notes

Notes

The website is built using standard web technologies including HTML5, CSS3, and JavaScript, with integration of advanced monitoring and analytics tools such as Dynatrace Real User Monitoring and Piwik PRO. The site is mobile-optimized with responsive design elements and includes proper meta tags for SEO. Performance is moderate, with room for optimization. Security headers and HTTPS configuration are well implemented. No CMS or hosting provider was explicitly identified. The technical infrastructure supports a professional and secure user experience, though accessibility could be improved.
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. 87/100Low20 findingsView report
  2. 25/100Critical4 findings · partial scanView report
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