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Security report for dpp.cz

Dopravní podnik hl. m. Prahy, akciová společnost · Transportation · Czech Republic

Medium risk. 4 critical or high findings in GDPR outside view and SSL/TLS.

Security score

65/100

Risk levelMedium

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

Dopravní podnik hl. m. Prahy, akciová společnost (DPP) is the primary public transportation operator in Prague, Czech Republic, managing metro, tram, and bus services. The company maintains a comprehensive and user-friendly website that provides schedules, ticketing information, service updates, and customer support. The site targets general public commuters and tourists in Prague, offering multilingual support and extensive travel information. Technically, the website employs modern JavaScript libraries, Google Analytics, and Tag Manager for tracking, and integrates customer service widgets. It is secured with HTTPS and uses CSRF tokens in forms, indicating a good security posture. However, some security headers could be improved. The WHOIS data is unavailable, likely due to privacy protection, but the website's professional presentation and official social media presence support its legitimacy. Overall, the site demonstrates a mature digital presence suitable for a large public transportation entity.

Scanned

This is an earlier scan of dpp.cz. View the latest report

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

4 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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, Twitter, LinkedIn, YouTube, Google Ads

      What to do: Document all third-party data sharing in your privacy policy

  2. 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

Keep watching dpp.cz

This scan found 18 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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Recommended

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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
85
Email security
75
DNS health
80
Network security
40
GDPR outside view
40
Average
65

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

DPP holds a dominant market position as Prague's main public transport provider, offering metro, tram, and bus services. Its business model is focused on public service with revenue streams from ticket sales and advertising. The company leverages multiple digital platforms including e-commerce and recruitment portals, enhancing its ecosystem. The website's clear navigation, multilingual support, and comprehensive content reflect a customer-centric approach. Partnerships and related domains indicate a well-integrated service offering. The absence of direct email contacts suggests a preference for controlled communication channels such as phone and contact forms. The company appears to be large-scale with a strong brand presence in the transportation sector within the Czech Republic.

Security posture

The website enforces HTTPS and uses CSRF tokens in forms, which are positive security measures. It integrates third-party scripts like Google Analytics and Mluvii widgets, which require ongoing monitoring for vulnerabilities. Security headers such as Content-Security-Policy and X-Frame-Options are not explicitly detected and should be implemented to enhance protection against clickjacking and content injection attacks. No exposed sensitive data or vulnerabilities were found in the HTML content. The lack of a public security policy or incident response contact is a gap in transparency and readiness. Overall, the security posture is good but could be improved with additional headers and published security practices.

Recommendations

  1. Implement Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options HTTP headers to strengthen security.
  2. Publish a clear security policy and incident response contact information to improve transparency and trust.
  3. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.
  4. Consider publishing a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Enhance privacy compliance disclosures with explicit data retention policies and user rights information.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Dopravní podnik hl. m. Prahy, akciová společnost
Description
Dopravní podnik hl. m. Prahy, akciová společnost (DPP) je hlavní provozovatel veřejné dopravy – metra, tramvají a autobusů v hlavním městě České republiky Praze a zároveň provozovatel městských drah (speciální a tramvajové), na nichž tuto dopravu provozuje.
Key services
Metro operation, Tram operation, Bus operation, Ticket sales and fare management, Information services for passengers
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, jQuery UI (datepicker, timepicker), Google Tag Manager, Google Analytics, Mluvii widget
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CSRF tokens in forms
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google DoubleClick
Marketing tools
Mluvii widget
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 no blocking or WAF challenge.
  2. WHOIS data is unavailable, possibly due to privacy protection or registry restrictions.
  3. Website uses HTTPS and modern tracking and analytics tools.
  4. Content is comprehensive and well-structured for public transportation users.
  5. Multiple official social media profiles linked.
  6. No security or privacy policy pages explicitly labeled as 'security policy' or 'incident response'.
  7. No vulnerability disclosure or security.txt found.
  8. Contact information includes phone number and contact form but no direct email addresses publicly listed.
  9. Website supports multiple languages (Czech, English, German).
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website uses a custom or proprietary CMS with modern JavaScript components including jQuery UI for date and time pickers, and integrates Google Tag Manager and Analytics for tracking. It loads asynchronously several external scripts to optimize performance. The site is mobile-optimized with responsive design and accessibility features such as ARIA roles and labels. SEO is supported by proper meta tags, Open Graph data, and structured JSON-LD data describing the organization and website. Performance is moderate, with potential improvements in script loading and caching. Hosting provider details are not explicitly identified. The technical infrastructure supports a large-scale public service website with good user experience and functional robustness.
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. 66/100Medium25 findingsView report
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