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Security report for domingoalonsoocasion.com

Domingo Alonso Group · Transportation · Spain

High risk. 8 critical or high findings in Network security, Security headers and 2 other checks.

Security score

49/100

Risk levelHigh

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

Domingo Alonso Ocasión operates a professional online platform specializing in the sale and purchase of used and Km 0 vehicles in the Canary Islands. The website positions itself as the largest used car portal in the region, offering a variety of automotive brands and services including vehicle comparison and direct purchase from customers. The business is part of the larger Grupo Domingo Alonso, a recognized entity in the automotive sector. Technically, the website employs modern frontend technologies such as Vue.js and Tailwind CSS, integrates Matomo and Google Tag Manager for analytics, and uses Didomi for GDPR-compliant cookie consent management. The site is mobile-optimized and provides a good user experience with clear navigation and relevant content. Security-wise, the website uses HTTPS and has basic security best practices in place, though it lacks explicit security policies and could improve DNS security by enabling DNSSEC. No critical vulnerabilities or suspicious patterns were detected. Overall, the website is trustworthy, compliant with privacy regulations, and professionally maintained.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
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

8 findings rated critical or high. Fix these first.

  1. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  2. 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 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';…

  3. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

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

Keep watching domingoalonsoocasion.com

This scan found 24 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.

Daily monitoring

Recommended

€25per month

  • 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
50
Email security
85
DNS health
70
Network security
0
GDPR outside view
50
Average
55
After the cap
49

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 · found on this site
  • 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

The company targets consumers in the Canary Islands looking for used and nearly new vehicles, leveraging its market position as the largest regional platform for such sales. Its business model focuses on retail automotive sales, vehicle purchase services, and customer engagement through comparison tools. The partnership with Grupo Domingo Alonso adds credibility and brand strength. The website's integration with analytics and consent management tools indicates a mature approach to digital marketing and compliance. The absence of terms of service and explicit security policies suggests areas for operational improvement. The company appears to maintain a medium-sized operation with a focus on regional dominance and customer trust.

Security posture

The website demonstrates a moderate security posture with HTTPS enforced and cookie consent mechanisms implemented. However, the lack of DNSSEC and missing explicit security headers such as Content-Security-Policy and X-Frame-Options reduce the overall security maturity. No incident response or vulnerability disclosure information is provided, which could hinder rapid response to security events. No exposed sensitive data or vulnerable libraries were detected. The site would benefit from publishing a security policy and establishing clear incident response contacts to enhance trust and compliance. Overall, the security posture is adequate but has room for improvement to meet higher standards.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Implement and verify security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a clear security policy and incident response contact information on the website.
  4. Consider adding a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Maintain and regularly audit third-party scripts and analytics tools to ensure no vulnerabilities are introduced.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Domingo Alonso Group
Description
Venta y compra de vehículos de segunda mano, ocasión y Km 0 en Canarias con garantía del Grupo Domingo Alonso.
Key services
Used car sales, Km 0 car sales, Vehicle purchase from customers, Vehicle comparison
Content quality
good
Branding
consistent

Technology

Stack
Tailwind CSS, Vue.js (vue-treeselect component), Matomo Analytics, Google Tag Manager, Didomi Consent Management Platform
Frameworks
Vue.js
Platforms
Google Domains DNS, Realtime Register B.V. domain registrar
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • Cookie consent mechanism
  • No exposed sensitive data detected

Analytics and tracking

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

Advertising

Tracking pixels
Matomo
Marketing tools
Didomi Consent Management
Transparency
basic

Site quality

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

Key observations

  1. Website is a professional automotive sales platform focused on Canarias region.
  2. Clear cookie consent and privacy policy mechanisms are implemented.
  3. No explicit security policy or incident response information found.
  4. No terms of service page detected.
  5. Use of modern frontend technologies and analytics tools.
  6. Domain registration is recent but consistent with business.
  7. No WAF or blocking detected; site fully accessible.
  8. No adult or questionable content detected.
Technical notes

Notes

The website uses a modern technology stack with Vue.js for frontend interactivity and Tailwind CSS for styling, ensuring responsive and visually appealing design. Analytics are handled via Matomo and Google Tag Manager, providing robust data collection capabilities. The site is hosted with DNS managed by Google Domains and registered via Realtime Register B.V. Performance is moderate with room for optimization, especially in accessibility and SEO. The CMS appears custom-built, which may require dedicated maintenance resources. Overall, the technical infrastructure supports the business needs effectively but could benefit from enhanced security configurations and performance tuning.
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

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