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Security report for opentable.es

OpenTable · Hospitality · Spain

Partial score · DNS & email only

69/100

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

OpenTable is a leading online restaurant reservation platform operating in Spain and globally. The website provides real-time booking services, restaurant reviews, and a loyalty program for diners. It targets a broad audience of restaurant-goers seeking convenient and trusted dining experiences. The platform is well-established with a large market presence and consistent branding across international domains. Technically, the site employs modern web technologies including React, Apollo GraphQL, and integrates with payment and analytics services such as Stripe and Google Analytics. The site is optimized for performance, mobile responsiveness, and SEO, delivering an excellent user experience. Security posture is strong with HTTPS enforcement, security headers, and cookie consent mechanisms, although explicit security policies and incident response contacts are not publicly disclosed. WHOIS data for the domain is restricted by the .es registry, limiting domain registration transparency, but the overall legitimacy is supported by the professional site and brand reputation. Strategic recommendations include publishing detailed security and incident response policies and establishing a vulnerability disclosure program to enhance trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
Checks completed
6of 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

1 finding rated critical or high. Fix these first.

  1. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

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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
0
Email security
70
DNS health
85
Network security
100
GDPR outside view
88
Average
69

Not counted

  • Security headers: did not complete in this scan.
  • 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

OpenTable operates in the hospitality sector as an essential business entity providing online restaurant reservation services. Its business model revolves around connecting diners with restaurants through a digital platform, generating revenue from restaurant partnerships and possibly transaction fees. The company benefits from a strong global brand with localized country-specific domains, including Spain. The platform's competitive advantage lies in its real-time booking capabilities, user reviews, and loyalty rewards. The target customers are general consumers seeking dining options and restaurants looking to manage bookings efficiently. The company maintains a broad partnership ecosystem evident from multiple international domains and support/press sites. Growth indicators include continuous feature enhancements and integration of modern technologies. The business maintains a professional online presence with comprehensive legal and privacy documentation.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and multiple security headers implemented, including HSTS and CSP with nonce usage. Cookie consent is managed via OneTrust, indicating GDPR compliance efforts. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of publicly available security policies, incident response contacts, or vulnerability disclosure mechanisms suggests room for improvement in transparency and readiness. The domain WHOIS data is restricted, which is typical for .es domains but limits external verification. Overall, the security posture is strong but could be enhanced by publishing explicit security governance documents and providing clear channels for security incident reporting.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and compliance.
  2. Establish and publicize an incident response contact or team for security issues.
  3. Implement a formal vulnerability disclosure program and security.txt file.
  4. Enhance transparency by providing data retention and privacy compliance details.
  5. Regularly audit third-party scripts and tracking tools to minimize privacy risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
OpenTable
Description
Haz reservas en línea, lee las opiniones sobre restaurante de los comensales y gana puntos para comidas gratuitas. OpenTable es una red de reservas en línea en tiempo real para restaurantes gourmet.
Key services
Online restaurant reservations, Restaurant reviews, Loyalty points for free meals
Content quality
excellent
Branding
consistent

Technology

Stack
React (implied by SPA and JS modules), Google Analytics (gtag.js), OneTrust Cookie Consent, Stripe (payment processing), Apollo GraphQL
Frameworks
React, Apollo GraphQL
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of CSP nonce
  • Cookie consent management
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Mixpanel
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Mixpanel
Marketing tools
OneTrust Cookie Consent
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 no blocking detected.
  2. Strong presence of privacy and cookie policies with consent mechanisms.
  3. No direct contact emails or phone numbers found on the homepage HTML.
  4. Use of modern web technologies and analytics tools.
  5. No security or incident response contact information publicly visible.
  6. WHOIS data is restricted by registry policy, limiting domain registration transparency.
Technical notes

Notes

The website is built using modern JavaScript frameworks, likely React, with Apollo GraphQL for data management. It uses modular JavaScript loading and integrates third-party services such as Stripe for payments and Google Analytics for tracking. The site is well-optimized for SEO with comprehensive meta tags, Open Graph, and JSON-LD structured data. Performance is enhanced by preconnect and DNS-prefetch hints for critical external resources. Accessibility and mobile optimization are good, supported by responsive design and ARIA roles. No CMS is explicitly detected, suggesting a custom or proprietary platform. Hosting details are not explicitly available from the HTML. The technical stack supports scalability and a rich user experience but requires ongoing monitoring for third-party dependencies and privacy compliance.
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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