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Security report for tripadvisor.co.uk

Hospitality · United Kingdom

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

65/100

Risk levelMedium

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

The website tripadvisor.co.uk is currently inaccessible due to a CAPTCHA-based Web Application Firewall (WAF) protection mechanism, which blocks automated content retrieval and analysis. Tripadvisor is a well-known enterprise-level hospitality platform established in 2002, providing travel reviews and related services primarily targeting UK users. Due to the WAF, no direct content, metadata, or contact information could be extracted from the provided HTML snapshot. The domain WHOIS data confirms a legitimate and consistent registration history with a reputable registrar. The technical infrastructure includes anti-bot scripts from captcha-delivery.com, indicating a strong focus on security and bot mitigation. However, this also limits external security and compliance analysis. Overall, the security posture appears cautious but cannot be fully assessed without access to the actual site content.

Scanned

This is an earlier scan of tripadvisor.co.uk. View the latest report

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
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

7 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  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

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

Keep watching tripadvisor.co.uk

This scan found 22 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
82
Security headers
20
Email security
70
DNS health
70
Network security
100
GDPR outside view
50
Average
65

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 tripadvisor.co.uk, from OffSeq Breach.

Total records
13,719
Employees
0
Customers
13,675
Third parties
44
Weak passwords
14%

6 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 tripadvisor.co.uk.

Select it in the checkout above.

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

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Technical appendix

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

Business context

Business profile

Tripadvisor operates in the hospitality sector as a major online travel review platform. Its business model revolves around user-generated content, advertising, and affiliate partnerships with travel service providers. The domain age and registration data support its market position as a mature and trusted brand. The lack of visible contact or policy information in the snapshot is due to WAF blocking rather than absence on the live site. Tripadvisor likely targets a broad audience of travelers and tourists in the UK and globally. The company is enterprise-sized with a complex partnership ecosystem, though no related domains were identified in this snapshot.

Security posture

The current security posture is characterized by the presence of a strong WAF mechanism that enforces CAPTCHA challenges to mitigate automated access and potential abuse. This is a positive security control but limits external visibility into security headers, SSL configuration, and policy disclosures. No vulnerabilities or exposed sensitive data were detected, but the inability to access the site content prevents a full security assessment. No incident response or vulnerability disclosure information was found. The domain registration is consistent and trustworthy, supporting a low risk of domain-related threats.

Recommendations

  1. Consider providing a crawler-friendly version or allowlist for security researchers to enable comprehensive external analysis.
  2. Ensure visible and accessible privacy, cookie, and terms of service policies to enhance compliance transparency.
  3. Publish clear contact and incident response information to improve trust and security posture.
  4. Maintain and regularly update security headers and SSL configurations to align with best practices.
  5. Implement a vulnerability disclosure program and security.txt file to foster responsible security reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Generic detected. Page content is blocked by a CAPTCHA challenge from captcha-delivery.com indicating a WAF or anti-bot protection is active. These observations may be incomplete. For a fuller analysis, contact guard@offseq.com.

Business

Technology

Stack
captcha-delivery.com script

Security

Observed score
25/100

Analytics and tracking

Site quality

Key observations

  1. Website content is inaccessible due to CAPTCHA-based WAF protection.
  2. No metadata, forms, or contact information visible in the provided HTML.
  3. No privacy, cookie, or terms of service policies detected in the HTML snapshot.
  4. WHOIS data indicates a long-established domain with consistent registration.
  5. External scripts are related to CAPTCHA delivery services.
  6. No social media or external business links found in the provided content.
Technical notes

Notes

The technical snapshot reveals the use of third-party CAPTCHA services (captcha-delivery.com) to protect the site from bots and automated scraping. No CMS or specific frameworks were detectable due to content blocking. Hosting provider details are not visible but likely involve cloud or CDN services to support global traffic. Performance, SEO, accessibility, and mobile optimization cannot be assessed due to the WAF challenge. The site uses minimal inline CSS and JavaScript related to CAPTCHA only in the provided HTML. Overall, the technical implementation prioritizes security and bot mitigation but at the cost of external content visibility.
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. 65/100Medium31 findingsView report
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