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Security report for opentable.hk

OpenTable · Hospitality · Hong Kong

Partial score · DNS & email only

65/100

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

OpenTable is a leading global online restaurant reservation platform offering real-time booking services, diner reviews, and loyalty rewards. The website targets general consumers seeking dining experiences and restaurants looking to manage reservations. It maintains a strong market position with a large international footprint, including localized domains for multiple countries. The platform is built on modern web technologies including React, Apollo GraphQL, and integrates payment processing via Stripe, supported by robust analytics and consent management tools. Security posture is strong with HTTPS enforcement, CSP, CSRF tokens, and reCAPTCHA integration, though explicit security policies and incident response details are not publicly disclosed. Overall, the site is professional, user-friendly, and compliant with privacy regulations, making it a trustworthy service for users and partners.

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

2 findings 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

  2. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

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

Keep watching opentable.hk

This scan found 10 issues across 5 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
0
Email security
50
DNS health
85
Network security
100
GDPR outside view
88
Average
65

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, focusing on online restaurant reservations and diner engagement. Its business model revolves around providing a seamless booking experience and earning revenue through partnerships with restaurants and possibly transaction fees. The company benefits from a broad international presence and strong brand recognition. Its ecosystem includes developer resources, press relations, and customer support portals, indicating a mature operational structure. The absence of direct contact details on the main site suggests a centralized support approach via help portals. The platform's integration with major social media channels and marketing tools supports customer acquisition and retention strategies.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, use of security headers such as CSP and HSTS, and anti-bot measures like Google reCAPTCHA. Privacy compliance is evident through comprehensive privacy and cookie policies with consent mechanisms. However, the lack of a publicly available security policy or vulnerability disclosure program limits transparency. No vulnerabilities or exposed sensitive data were detected in the analysis. Incident response readiness and security contact channels are not explicitly provided, which could be improved to enhance trust and preparedness.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and frameworks.
  2. Implement and publicize a vulnerability disclosure or security.txt file to encourage responsible reporting.
  3. Provide clear security incident contact information such as security@ or abuse@ email addresses.
  4. Enhance transparency around data retention policies and user privacy controls.
  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
Book online, read restaurant reviews from diners, and earn points towards free meals. OpenTable is a real-time online booking network for fine dining restaurants.
Key services
Online restaurant reservations, Restaurant reviews, Points and rewards for diners
Content quality
excellent
Branding
consistent

Technology

Stack
React (implied by JSX and SPA structure), Apollo GraphQL, Google Tag Manager, Google Analytics 4, OneTrust Cookie Consent, Stripe (payment processing), Google reCAPTCHA
Frameworks
React
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • CSRF token present
  • Content Security Policy nonce used
  • Cookie consent and privacy compliance
  • Use of reCAPTCHA for bot protection

Analytics and tracking

Services
Google Analytics 4, Google Tag Manager, Mixpanel (enabled but debug false)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Adjust
Tracking pixels
Google Analytics 4, OneTrust
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 a professional, well-established online restaurant reservation platform.
  2. Strong compliance with privacy and cookie policies including consent mechanisms.
  3. Good use of modern web technologies and security best practices.
  4. No visible contact emails or phone numbers on the main page; contact likely via support/help site.
  5. Extensive international presence with multiple localized domains.
  6. No signs of suspicious or malicious content.
  7. Social media presence across major platforms.
  8. No explicit security policy or incident response info publicly visible.
Technical notes

Notes

The website leverages a modern technology stack including React for frontend rendering, Apollo GraphQL for data management, and Stripe for payment processing. It uses Google Analytics 4 and Tag Manager for analytics, and OneTrust for cookie consent management. Hosting appears to be via Akamai CDN, ensuring fast global content delivery. The site is well-optimized for SEO, mobile responsiveness, and accessibility. Use of nonce-based CSP and CSRF tokens indicates attention to security best practices. Performance is fast with preconnect and dns-prefetch optimizations. There is no detected CMS, suggesting a custom or proprietary platform. Overall, the technical infrastructure supports a scalable, secure, and user-friendly experience.
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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