Skip to main content

Security report for opentable.co.uk

OpenTable · Hospitality · United Kingdom

Partial score · DNS & email only

64/100

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

OpenTable UK operates a comprehensive online restaurant reservation platform tailored for the UK market, enabling consumers to discover and book tables at a wide range of restaurants. The website demonstrates a strong market position as a trusted service with extensive regional and international reach. Technically, the site employs modern web technologies including React, Apollo GraphQL, and integrates analytics and consent management tools, reflecting a mature digital infrastructure. Security posture is robust with HTTPS enforcement, security headers, and no visible vulnerabilities, although incident response contact details and vulnerability disclosure mechanisms are not publicly evident. Overall, the site presents a low-risk profile with strong privacy compliance and professional design, supporting its credibility and user trust.

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

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

Keep watching opentable.co.uk

This scan found 12 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

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

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

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
0
Email security
70
DNS health
60
Network security
100
GDPR outside view
88
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 UK targets consumers seeking convenient restaurant reservations and also serves restaurateurs with management solutions. Its business model revolves around facilitating bookings and providing software tools for restaurants. The platform benefits from a broad partnership ecosystem and international brand recognition. Revenue streams likely include commissions from bookings and software subscriptions. The website's extensive internal linking and localized content indicate strategic market segmentation and growth focus. The absence of direct contact details on the main site suggests reliance on support portals and partner channels for customer service.

Security posture

The website exhibits a mature security posture with enforced HTTPS, comprehensive security headers, and CSRF protection tokens embedded in page state. No exposed sensitive data or vulnerable libraries were detected. However, the lack of a public security policy, incident response contacts, or vulnerability disclosure page represents a gap in transparency and readiness. GDPR compliance is evident through privacy and cookie policies with consent mechanisms. The site would benefit from publishing explicit security and incident response information to enhance trust and preparedness.

Recommendations

  1. Publish a dedicated security policy and incident response contact information to improve transparency.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Enhance accessibility features to meet higher compliance standards and improve user experience for all audiences.
  4. Consider adding clear company contact details on the website to facilitate user support and trust.
  5. Regularly audit third-party scripts and analytics tools to ensure no vulnerabilities or privacy issues arise.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
OpenTable
Description
Restaurant booking available 24/7: Find and book a table from the best restaurants on OpenTable UK - the restaurant reservation site trusted by 1000s of Brits to book the perfect table.
Key services
Restaurant table booking, Restaurant management software, Private dining and event booking
Content quality
excellent
Branding
consistent

Technology

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

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CSRF token present in page state
  • No exposed sensitive data in HTML
  • Content Security Policy implemented

Analytics and tracking

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

Advertising

Ad networks
Adjust
Tracking pixels
Mixpanel
Marketing tools
Mixpanel
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 no blocking or WAF challenge.
  2. Comprehensive restaurant booking platform with strong UK focus.
  3. Extensive internal linking to regional and international OpenTable sites.
  4. Strong privacy and cookie policy presence with GDPR compliance.
  5. No direct contact emails or phone numbers found on main page.
  6. Use of modern web technologies and analytics tools.
  7. No visible security vulnerabilities or exposed sensitive data.
  8. WHOIS data unavailable for exact domain, indicating subdomain or alias usage.
Technical notes

Notes

The website is built on a modern JavaScript framework (likely React) with Apollo GraphQL for data management, indicating a single-page application architecture. It integrates multiple third-party services including Mixpanel for analytics, Google Tag Manager, Google Maps API, and OneTrust for cookie consent management. The site uses CDN domains for static content delivery, enhancing performance. Meta tags and structured data (JSON-LD) are well implemented for SEO and social media integration. Performance is moderate with good mobile optimization, though accessibility could be improved. No CMS or hosting provider details were explicitly detected. Overall, the technical stack supports scalability and a rich user 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

Reviews of this site

Share your experience with opentable.co.uk. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review opentable.co.uk.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.