Privacy Policy

Last updated: March 21, 2025

1. Information We Collect

ONGO (the "Service") can be used without registration. We collect minimal information.

Automatically Collected Information

  • Browser fingerprint (hashed, non-identifiable)
  • IP address
  • Browser type and version
  • Operating system information
  • Device type (desktop/mobile/tablet)
  • Pages visited and access time
  • Cookie data

Information You Provide

  • Newsletter subscription: email address
  • Board/Story posts: nickname, password (hashed)
  • Name Art feature: Chinese character name

2. How We Use Your Information

  • Track learning progress and XP/level (fingerprint-based)
  • Maintain streak (consecutive learning) records
  • Analyze and improve service usage
  • Send newsletters
  • Display advertisements and measure performance
  • Prevent misuse

3. Cookies

This Service uses the following types of cookies:

  • Essential Cookies: Session management, language preferences, fingerprint storage
  • Analytics Cookies: Visitor statistics and service improvement
  • Advertising Cookies: Personalized ads through Google AdSense

You may reject cookies through your browser settings, but some features may be limited.

4. Third-Party Advertising (Google AdSense)

This Service displays ads through Google AdSense. Google and third-party ad providers may use cookies to serve relevant ads based on your browsing history.

  • Google uses the DART cookie to serve ads based on visits to this site and other sites.
  • You can opt out of personalized ads at Google Ads Settings.
  • Alternatively, visit aboutads.info to opt out of third-party cookies.

For more information, see Google Advertising Policies.

5. Data Retention

  • Visitor logs: automatically deleted after 90 days
  • Newsletter emails: retained until unsubscription
  • Board/Story data: retained until deletion request
  • Learning progress: retained while service is active

6. Third-Party Disclosure

We do not share your personal information with third parties except:

  • When required by law
  • Essential external services for operation (Google AdSense, Gmail API)

7. Your Rights

  • Unsubscribe from newsletter: via email link or direct request
  • Delete posts: using your password
  • Reject cookies: through browser settings
  • Contact us: support@ongo.blog

8. Security Measures

  • Password hashing (bcrypt)
  • SQL Injection prevention (Prepared Statements)
  • XSS prevention (output escaping)
  • CSRF token validation
  • HTTPS encrypted communication
  • Secure session settings (HttpOnly, Secure, SameSite)

9. Contact

For inquiries about personal data processing, please contact us:

  • Service: ONGO
  • Email: support@ongo.blog
  • Website: https://ongo.blog

10. Changes to This Policy

This policy may be updated as laws or service policies change. Any changes will be announced on this page.