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Security report for tripadvisor.cz

Hospitality · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

64/100

Risk levelMedium

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

The website tripadvisor.cz is a localized version of the global Tripadvisor platform, focused on travel and hospitality services in the Czech Republic. Tripadvisor is a well-known leader in travel reviews and booking facilitation, serving a large audience of travelers and tourists. However, the provided HTML content is blocked by a DataDome CAPTCHA security mechanism, preventing access to actual site content and limiting analysis. The domain is well-established since 2005, with consistent WHOIS data and reputable DNS providers, indicating legitimacy. Technically, the site employs bot mitigation services and uses DNS infrastructure from Google and AWS, but no further technical or CMS details are available due to content blocking. Security posture cannot be fully assessed, but the presence of a WAF suggests active security measures. No privacy, cookie, or terms of service policies were found in the accessible content, nor any contact information or forms. Overall, the site appears legitimate and aligned with Tripadvisor's business model, but the inability to access content due to the CAPTCHA challenge severely limits the ability to evaluate content quality, privacy compliance, and security headers. The risk assessment is constrained by this limitation, and the site should consider providing accessible policy documents and contact information to improve transparency and compliance.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
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

8 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • 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

  2. 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';…

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

Keep watching tripadvisor.cz

This scan found 21 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.

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.

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Full report

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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
82
Security headers
20
Email security
70
DNS health
85
Network security
100
GDPR outside view
25
Average
64

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

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 as a major player in the hospitality sector, providing user-generated travel reviews, hotel and restaurant recommendations, and booking services. Its business model relies heavily on advertising revenue and affiliate commissions from travel bookings. The Czech localized domain tripadvisor.cz targets Czech-speaking travelers and tourists, leveraging Tripadvisor's global brand recognition. The domain age and DNS infrastructure support a mature and stable operation. However, the lack of visible contact or policy information in the accessible content limits direct business intelligence extraction from this snapshot.

Security posture

The website employs a DataDome CAPTCHA challenge, indicating the use of a Web Application Firewall or bot mitigation service to protect against automated threats. This is a positive security measure but also restricts content access for analysis. No security headers or SSL configuration details were available from the provided data. There is no visible privacy policy, cookie consent mechanism, or incident response contact information, which are important for GDPR compliance and security transparency. The domain registration is consistent and trustworthy, with no suspicious patterns detected. Overall, the security posture shows active protection but lacks visible compliance documentation and contact channels.

Recommendations

  1. Provide accessible privacy and cookie policies on the website to ensure GDPR compliance and user trust.
  2. Publish clear contact information including security incident response contacts to improve transparency and support.
  3. Implement and expose security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Optimize website accessibility and SEO by providing meaningful content and meta tags accessible without CAPTCHA barriers.
  5. Review CAPTCHA implementation to balance security with accessibility for legitimate users and automated analysis.
Site observations

Automated reading of the public site. Ratings are indicative.

Generic detected. Website content is blocked by a CAPTCHA security challenge from DataDome, indicating a WAF or bot mitigation mechanism is active. These observations may be incomplete. For a fuller analysis, contact guard@offseq.com.

Business

Description
Tripadvisor is a travel and hospitality platform providing user-generated reviews and travel-related content.
Key services
travel reviews, hotel bookings, restaurant recommendations, tourist attraction information
Content quality
poor

Technology

Stack
captcha-delivery.com script, Cloudflare (implied by cfasync attribute)

Analytics and tracking

Site quality

Design
poor
User experience
poor
Content relevance
poor
Navigation
poor
Professionalism
poor
Trustworthiness
low

Key observations

  1. Website content is inaccessible due to a CAPTCHA challenge by DataDome.
  2. No visible privacy, cookie, or terms of service policies found in the provided HTML.
  3. No contact information or forms detected in the provided content.
  4. WHOIS data indicates a well-established domain with consistent registration details.
  5. Technical content is minimal, limiting the ability to assess SEO, accessibility, or performance.
  6. Security headers and SSL configuration could not be assessed from the provided data.
  7. The site uses multiple authoritative DNS providers, indicating robust DNS infrastructure.
Technical notes

Notes

The website uses a CAPTCHA service from DataDome to mitigate automated access, indicating a focus on security against bots. DNS infrastructure is distributed across Google Domains and AWS DNS services, suggesting reliable hosting and domain management. No CMS or web frameworks were detectable from the limited HTML content. The site lacks visible meta tags, structured data, or SEO optimizations in the accessible content. Performance, mobile optimization, and accessibility cannot be assessed due to content blocking. The technical setup prioritizes security but at the cost of content accessibility for analysis.
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. 64/100Medium30 findingsView report
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