Privacy Policy
Last updated: 2026-08-05
1. Controller
The operator of KumoCert (“we/us”) handles personal information in accordance with this policy. Operator details are provided on the Legal Notice page. The Japanese version prevails in case of any inconsistency.
2. Information we collect
(1) Information you provide at registration (email address, display name, password stored as a hash); (2) information generated through use (study history, answers, purchase history); (3) technical information (IP address, browser information, cookies).
3. Purposes
We use the information to provide and authenticate the Service, show and analyze study progress, process payments, respond to inquiries and send important notices, prevent fraud, and produce de-identified statistics for improvement.
4. Sharing and processors
We do not share personal information with third parties without consent except as required by law. Stripe, Inc. and Link process information as needed for payments, order management, tax and transaction support. Our cloud providers process information as needed for hosting and email delivery.
5. Cookies
We use cookies to keep you signed in. Disabling cookies will make parts of the Service unavailable.
6. Security
We apply safeguards including password hashing, TLS encryption and access control.
7. Your rights
You may request disclosure, correction, suspension of use or deletion of your personal information, including account deletion, via our contact point.
8. Contact
Please contact us at [email protected].
9. Updates
Changes to this policy will be announced on the Service.