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Security report for vinci-construction.cz

VINCI Construction CS a.s. · Transportation · Czech Republic

Medium risk. 5 critical or high findings in GDPR outside view and SSL/TLS.

Security score

75/100

Risk levelMedium

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

VINCI Construction CS a.s. is the largest construction group operating in the Czech Republic and Slovakia, specializing in transport engineering, bridge construction, water management, and building construction. The company operates through a network of 21 subsidiary brands, serving a broad range of infrastructure and construction needs across the region. The website presents a professional and comprehensive overview of the business, targeting corporate and public sector clients. Technically, the website is built on the Solidpixels CMS platform, utilizing modern web technologies including Google Tag Manager and Google Analytics for tracking. It is mobile optimized and provides a good user experience with clear navigation and relevant content. Security posture is solid with HTTPS enforced and cookie consent mechanisms in place, although some security headers and explicit incident response policies are absent. WHOIS data is unavailable, which slightly impacts trust but the overall business credibility remains high due to consistent branding, contact transparency, and social media presence. Strategic recommendations include enhancing security headers, publishing incident response contacts, and adding a vulnerability disclosure policy to further strengthen trust and compliance.

Scanned

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

5 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, LinkedIn, YouTube, Google APIs

      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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching vinci-construction.cz

This scan found 17 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
52
Security headers
85
Email security
85
DNS health
85
Network security
100
GDPR outside view
40
Average
75

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 vinci-construction.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for vinci-construction.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

The company holds a dominant market position as the largest construction group in the Czech and Slovak markets, leveraging a diversified portfolio of subsidiaries specializing in various construction sectors. Its business model focuses on providing comprehensive construction services including transport infrastructure and civil engineering. The presence of multiple subsidiaries indicates a broad operational footprint and specialization. Revenue streams likely derive from public and private sector contracts. The company targets government agencies, infrastructure developers, and large-scale commercial clients. The website's professional presentation and detailed subsidiary listings suggest a mature organization with established partnerships and a strong brand ecosystem. Growth indicators include active social media engagement and a broad service offering. No direct competitors or market threats are listed, but the company’s scale and scope imply a competitive advantage in the regional construction industry.

Security posture

The website demonstrates a moderate to strong security posture with HTTPS enforced and a cookie consent banner supporting GDPR compliance. However, the absence of explicit security headers such as Content-Security-Policy and X-Frame-Options reduces defense-in-depth. No visible vulnerabilities or exposed sensitive data were detected in the HTML content. The lack of published incident response or security policies and no security.txt file limits transparency and readiness communication. The use of third-party analytics and tag management is standard but requires ongoing monitoring for privacy compliance. Overall, the security maturity is adequate for a corporate website but could be improved by adopting additional security best practices and publishing clear security policies.

Recommendations

  1. Implement and configure HTTP security headers including Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to enhance protection against common web attacks.
  2. Publish a dedicated security policy and incident response contact information on the website to improve transparency and readiness.
  3. Create and maintain a security.txt file to facilitate responsible vulnerability disclosure and improve trust with security researchers.
  4. Regularly audit third-party scripts and analytics tools to ensure ongoing privacy compliance and minimize tracking risks.
  5. Enhance accessibility features and conduct periodic security assessments to maintain a strong security posture aligned with industry standards.

Contact details published on the site

Addresses
Legal name
VINCI Construction CS a.s.
Registration number
14080672
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
VINCI Construction CS a.s.
Description
We are the largest construction group in the Czech and Slovak Republic. We operate in all areas of construction, from traffic engineering to civil engineering.
Key services
Transport engineering, Bridge construction, Water management structures, Building construction
Content quality
good
Branding
consistent

Technology

Stack
Google Tag Manager, Google Analytics (gtag.js), Solidpixels CMS, jQuery 1.x, Fancybox lightbox, Swiper slider, Flatpickr date picker
Frameworks
Solidpixels CMS framework
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Cookie consent banner with granular options

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

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. Content is professionally presented with clear business focus on construction in Czech Republic and Slovakia.
  3. Multiple subsidiary companies are linked, indicating a large corporate group.
  4. Contact information is complete and consistent across pages.
  5. Cookie consent and privacy policy are implemented and GDPR compliant.
  6. No explicit security policies or incident response contacts are published.
  7. WHOIS data is missing, which is a concern but not uncommon for some ccTLDs or privacy-protected domains.
  8. Website uses modern web technologies and is mobile optimized.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on the Solidpixels CMS platform, leveraging a modern JavaScript stack including jQuery, Fancybox, Swiper, and Flatpickr. Google Tag Manager and Google Analytics are integrated for marketing and analytics purposes. The site uses responsive design techniques and is mobile optimized, providing a good user experience across devices. Performance is moderate with asynchronous loading of scripts and lazy loading of images. SEO is supported by proper meta tags and Open Graph data. The technical infrastructure appears well maintained with no visible errors or broken elements. Opportunities exist to improve accessibility and implement additional security headers. Hosting provider details are not explicitly identified from the content. Overall, the technical implementation supports the business goals effectively with room for incremental 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. 78/100Low22 findingsView report
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