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Security report for airbnb.es

Airbnb, Inc. · Real Estate · Spain

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

Security score

73/100

Risk levelMedium

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

Airbnb, Inc. operates a leading global online marketplace for vacation rentals, experiences, and related services, targeting travelers and hosts worldwide. The Spanish localized website (airbnb.es) offers millions of listings across more than 220 countries, reflecting a mature and well-established business model. The platform's market position is strong, supported by extensive content, consistent branding, and a professional user experience. Technically, the website employs modern web technologies such as React and JavaScript, with performance optimizations and mobile responsiveness, ensuring a fast and accessible user interface. Security posture is robust with HTTPS enforcement, security headers, and error monitoring via Bugsnag, although explicit security policies and incident response contacts are not prominently published. Overall, the site demonstrates high trustworthiness and compliance with privacy regulations, including GDPR. Strategic recommendations include enhancing transparency around security policies and incident response, and publishing a vulnerability disclosure policy to further strengthen security culture.

Scanned

This is an earlier scan of airbnb.es. View the latest report

NIS2 and GDPR posture

GDPR outside view
33/ 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 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

  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 airbnb.es

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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  • 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
62
Security headers
80
Email security
70
DNS health
90
Network security
100
GDPR outside view
33
Average
73

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 airbnb.es, from OffSeq Breach.

Total records
98,225
Employees
0
Customers
98,202
Third parties
23
Weak passwords
10%

35 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for airbnb.es.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

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

Business context

Business profile

Airbnb's business intelligence reveals a dominant position in the vacation rental and hospitality sector, leveraging a marketplace model that connects hosts and travelers. Revenue streams primarily come from service fees on bookings and experiences. The platform targets a broad audience including leisure and business travelers, with localized content for Spain and many other regions. The company benefits from a strong global partnership ecosystem and brand recognition. Growth indicators include continuous expansion of listings and services, as well as investment in user experience and technology. The website's multilingual support and extensive linked domains reflect a comprehensive international strategy.

Security posture

The website exhibits a mature security posture with enforced HTTPS, comprehensive security headers, and active error reporting mechanisms. No exposed sensitive data or vulnerable libraries were detected in the analyzed content. However, the absence of a dedicated security policy page and incident response contact details represents a compliance gap. There is no evidence of a published security.txt or vulnerability disclosure program, which are best practices for transparency and community engagement. The platform appears prepared for incident response internally but could improve external communication channels for security issues. GDPR compliance is indicated by privacy and cookie policies with consent mechanisms.

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 and security.txt file.
  4. Enhance transparency on data retention and processing practices to strengthen privacy compliance.
  5. Continue monitoring and updating third-party libraries to avoid vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Airbnb, Inc.
Description
Plataforma global para alquileres vacacionales, experiencias y servicios relacionados, con millones de alojamientos en más de 220 países y regiones.
Key services
Vacation rentals, Experiences, Services for hosts
Content quality
excellent
Branding
consistent

Technology

Stack
React, JavaScript, CSS, HTML5, Google Tag Manager, Bugsnag
Frameworks
React
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of CSP
  • Error reporting via Bugsnag
  • Secure cookies and tokens

Analytics and tracking

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

Advertising

Tracking pixels
Bugsnag
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 rich content and interactive features.
  2. Strong branding and consistent user interface.
  3. Comprehensive multilingual support with hreflang tags.
  4. Use of modern web technologies and performance optimizations.
  5. No signs of phishing, malware, or suspicious activity.
  6. Lack of explicit security policy and incident response contact details.
Technical notes

Notes

The website is built on a modern technology stack including React and JavaScript, with CSS and HTML5 standards. It uses Google Tag Manager for analytics and Bugsnag for error monitoring. The site is hosted likely on Amazon AWS infrastructure, inferred from CDN domains. Performance is optimized with preloading scripts and responsive design. Accessibility features such as skip links and ARIA roles are implemented, contributing to a good user experience. SEO is supported by meta tags, Open Graph, and JSON-LD structured data. The technical implementation is robust, with no critical technical debt or outdated components detected.
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. 69/100Medium25 findingsView report
  2. 69/100Medium25 findingsView report
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