Privacy Policy

Last updated: February 27, 2026

This page explains what data we collect and how we use it.

1. Overview

This policy describes how data is handled in World Cup 2026 Tournament Predictor. By using the service, you agree to this policy.

2. Data We Collect

Data entered by users

  • Nickname: Display name for league participation
  • Admin password: Set when creating a league (stored as hash)
  • Prediction data: Group standings and knockout picks

Data collected automatically

  • Session data: Admin login cookie (7-day validity)
  • Access logs: IP address and request information
  • Analytics data: Aggregated stats via Google Analytics

Data not collected

  • Direct personal identifiers such as email, phone number, or address
  • Standard participant login credentials (access is controlled by entry URL)

3. Purpose of Use

  • Operate leagues and manage predictions
  • Calculate scores and display rankings
  • Admin authentication and session control
  • Security and abuse prevention

4. Third-Party Services

We use the following third-party services. Please review their policies as well.

Cloudflare Pages (Hosting)

Hosting and CDN delivery.

Google Analytics

Usage analytics for service improvement.

Affiliate links

External services apply their own privacy policies after link navigation.

Except where required by law, we do not provide personal information to other third parties.

5. Cookies

  • Admin session cookie: Maintains admin login state
  • Language preference: Stored in localStorage
  • Analytics cookie: Used by Google Analytics
  • No third-party advertising cookies are used

6. Data Retention

  • League and prediction data are stored during service operation
  • Admin sessions expire after 7 days
  • Old sessions are removed when admin URL is rotated
  • All data will be removed if service is terminated

7. Security

  • Passwords are stored as hashes
  • Timing-attack-resistant comparison is used
  • Session cookies use httpOnly and SameSite settings
  • Admin codes can be rotated

8. Policy Changes

This policy may be updated without prior notice. The latest version is posted on this page.

9. Contact

For privacy-related requests or questions, please use the contact form.

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