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Security report for opentable.com.tw

OpenTable · Hospitality · Taiwan

Partial score · DNS & email only

64/100

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

OpenTable Taiwan operates as a leading online restaurant reservation platform, providing consumers in Taiwan with access to over 5,000 restaurants for real-time booking and availability checking. The website is well-localized with traditional Chinese content and targets general consumers seeking convenient dining reservations. Technically, the site leverages modern web technologies including React, Apollo GraphQL, and integrates analytics and consent management tools such as Mixpanel and OneTrust. The site demonstrates good SEO practices and mobile optimization, ensuring a positive user experience. Security posture is strong with HTTPS enforcement, security headers, and no visible vulnerabilities, although explicit security policies and incident response contacts are not publicly disclosed. Overall, the site is professional, trustworthy, and compliant with privacy regulations including GDPR. Strategic recommendations include publishing a dedicated security policy and vulnerability disclosure to enhance transparency and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
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

4 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. 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 Policy found

      GDPR requires clear information about cookie usage

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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, LinkedIn, YouTube, Google APIs

      What to do: Document all third-party data sharing in your privacy policy

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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
85
DNS health
85
Network security
100
GDPR outside view
50
Average
64

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 Taiwan holds a strong market position as a premier restaurant reservation service in Taiwan, supported by a large network of restaurants and international brand recognition. The business model centers on facilitating online bookings and restaurant discovery, targeting a broad consumer base. The company benefits from a global ecosystem of sister sites and partners, including mobile app tracking providers. The platform's comprehensive content and localized offerings indicate a mature digital presence with potential for further growth. The absence of direct contact emails or phone numbers on the main site suggests reliance on help portals for customer support, which aligns with scalable digital service models.

Security posture

The website exhibits a mature security posture with enforced HTTPS, robust security headers, and CSRF protection mechanisms. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the lack of a public security policy or incident response contact channels represents a compliance gap and an opportunity for improvement. Privacy compliance is well addressed with comprehensive privacy and cookie policies and consent mechanisms. The site’s integration with reputable analytics and consent platforms further supports its security and privacy maturity. Overall, the security risks are low, but transparency enhancements are recommended.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Implement and publicize a vulnerability disclosure program or security.txt file.
  3. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  4. Enhance direct contact information availability for improved customer trust and support.
  5. Continue monitoring and updating third-party libraries and tracking tools to mitigate emerging vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
OpenTable
Description
餐廳訂位，首選使用線上訂位系統OpenTable台灣！全台超過5,000家餐廳在線，24hr線上訂位查詢，即時確認不用等。即上OpenTable，一鍵預訂最夯餐廳！
Key services
Online restaurant reservations, Real-time availability checking, Restaurant discovery
Content quality
excellent
Branding
consistent

Technology

Stack
Apollo GraphQL, Mixpanel analytics, Google Tag Manager, OneTrust (cookie consent), Google Maps API
Frameworks
React
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • CSRF token present
  • No visible vulnerable libraries

Analytics and tracking

Services
Mixpanel, Facebook Pixel, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Adjust
Tracking pixels
Mixpanel, Facebook Pixel
Marketing tools
Mixpanel, OneTrust
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 and functional.
  2. Content is localized for Taiwan market with traditional Chinese language.
  3. Strong SEO and structured data usage.
  4. Multiple international OpenTable domains linked.
  5. Social media presence across major platforms.
  6. No exposed security issues or vulnerabilities detected.
  7. Privacy and cookie policies are present and comprehensive.
  8. No direct company emails or phone numbers found on main site; contact via help portal.
  9. No explicit security policy or incident response page found.
Technical notes

Notes

The website is built on a modern technology stack featuring React and Apollo GraphQL, enabling dynamic and responsive user experiences. Integration with analytics (Mixpanel, Facebook Pixel) and consent management (OneTrust) tools reflects a mature digital marketing infrastructure. The site uses structured data (JSON-LD) for SEO enhancement and supports multiple international domains for global reach. Performance is moderate with preconnect and dns-prefetch optimizations, though further performance tuning could improve load times. Accessibility and mobile optimization are good, supporting a wide range of users. No CMS was explicitly detected, suggesting a custom or proprietary platform. Hosting details are not disclosed but the presence of multiple CDN domains indicates use of content delivery networks for scalability.
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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