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Security report for holidu.com.mx

Holidu GmbH · Real Estate · Mexico

Low risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

76/100

Risk levelLow

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

Holidu.com.mx is a localized vacation rental platform operated by Holidu GmbH, offering a wide range of verified holiday homes, apartments, and rural houses primarily targeting families and pet owners in Mexico and Europe. The platform emphasizes quality, trust, and convenience with features like free cancellation and star host badges. Technically, the website employs modern web technologies including React, Tailwind CSS, and integrates multiple analytics and advertising services such as Google Analytics, Facebook Connect, and Taboola. The site is mobile-optimized and provides a seamless user experience with clear navigation and professional design. Security-wise, the site enforces HTTPS and includes standard security headers, but lacks explicit public security policies or incident response information. Privacy compliance is strong with comprehensive privacy and cookie policies and consent mechanisms in place. Overall, the website is trustworthy, professional, and well-positioned in the vacation rental market.

Scanned

NIS2 and GDPR posture

GDPR outside view
58/ 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

4 findings rated critical or high. Fix these first.

  1. 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 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';…

  2. GDPR outside view

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

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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

  3. 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 holidu.com.mx

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.

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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
77
Security headers
70
Email security
65
DNS health
85
Network security
100
GDPR outside view
58
Average
76

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

Holidu GmbH operates a large-scale online marketplace for vacation rentals with a strong presence across multiple European countries and Mexico. The business model revolves around aggregating verified rental properties and facilitating bookings through their platform and mobile apps. Their competitive advantage lies in verified listings, user trust signals like star hosts, and a broad geographic reach. Revenue streams likely include commissions from bookings and advertising. The target customers are families, pet owners, and travelers seeking quality vacation homes. The company maintains partnerships with various regional sites and uses advanced marketing and tracking tools to optimize customer acquisition and retention. The absence of direct contact information on the main site suggests a focus on automated online service and support.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and several security headers present. It uses asynchronous loading of scripts to improve performance and reduce attack surface. However, there is no publicly available security policy, incident response plan, or vulnerability disclosure program, which are important for transparency and trust. The use of third-party scripts and trackers introduces potential privacy risks, though cookie consent mechanisms are implemented. No vulnerabilities or exposed sensitive data were detected in the HTML content. The security score is good but could be improved by publishing explicit security documentation and enhancing HTTP security headers.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency.
  2. Implement and publicize a vulnerability disclosure program and security.txt file.
  3. Add clear contact information for security incidents (e.g., security@holidu.com).
  4. Enhance HTTP security headers with Content Security Policy (CSP), HSTS, and X-Content-Type-Options.
  5. Regularly audit and minimize third-party scripts to reduce privacy and security risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Holidu GmbH
Description
Amplia selección de alquileres vacacionales, apartamentos, casas rurales de alta calidad. Alquileres vacacionales comprobados al mejor precio, reserva con confianza. Alquileres vacacionales con piscina, vistas al mar, apto para niños, apto para mascotas. Especialistas en las regiones turísticas más bonitas de Europa.
Key services
Vacation rental search and booking, Verified property listings, Mobile app for bookings, Property advertising for owners
Content quality
excellent
Branding
consistent

Technology

Stack
React, Tailwind CSS, JavaScript, ThumbmarkJS fingerprinting, Google Tag Manager, Google Analytics, Taboola, Bing Ads, Facebook Connect
Frameworks
React
Platforms
Web, Mobile app (iOS and Android)
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of async scripts
  • Cookie consent mechanism

Analytics and tracking

Services
Google Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Taboola, Bing Ads, Facebook Ads
Tracking pixels
Facebook Connect, Taboola, Bing Ads
Transparency
good

Site quality

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

Key observations

  1. Website is a professional vacation rental platform localized for Mexico.
  2. Strong branding consistency and user-friendly design.
  3. Comprehensive cookie and privacy policies with consent mechanisms.
  4. No direct contact emails or phone numbers found on the main page.
  5. Use of modern web technologies and analytics/tracking tools.
  6. No security policy or incident response information publicly available.
  7. No vulnerability disclosure or security.txt found.
  8. No adult or explicit content detected; family and pet friendly focus.
  9. No WAF or blocking mechanisms detected; full content accessible.
Technical notes

Notes

The website is built using modern front-end technologies such as React and Tailwind CSS, ensuring responsive and accessible design. It integrates multiple third-party services for analytics, advertising, and user tracking, including Google Analytics, Facebook Connect, Taboola, and Bing Ads. The site uses asynchronous script loading and font loading optimizations to improve performance. SEO is well addressed with proper meta tags, Open Graph tags, and hreflang attributes for multilingual support. The site is mobile-optimized and provides a smooth user experience. Hosting and CMS details are not explicitly identified but the infrastructure appears robust. Performance is moderate, with room for improvement in load times and script management.
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. 76/100Low27 findingsView report
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