Privacy Policy

Casbin respects your privacy. This policy explains what information we collect when you use this website and the Casbin sign-in service, why we collect it, and how it is handled.

Information we collect

• Information you provide. When you contact us, join our mailing list or community channels, or open an issue, we receive the information you choose to provide, such as your name, email address, and the content of your message.
• Sign-in information. Some of our sites and applications let you sign in with a third-party account, such as Google. When you do, we receive basic profile information from that provider, which may include your name, email address, and profile picture. We use it only to authenticate you, create and secure your account, and display your profile.
• Technical and usage information. Like most websites, our servers and analytics may record technical data such as your IP address, browser type, device information, the pages you visit, and the time of your visit. We use this to operate the site, understand how it is used, and protect it from abuse.

How we use information

We use the information we collect to provide and operate our websites and services, authenticate users, respond to requests and inquiries, maintain security, diagnose problems, and improve our content and services. We do not use the information for advertising, and we do not sell personal information.

Cookies and analytics

This website uses local storage to remember your theme preference. Our analytics uses Matomo with cookies disabled, so it does not track you across sites. Embedded third-party content, such as comments, is loaded only after you choose to load it.

Sharing

We do not share personally identifying information with the public or with third parties except: when you ask us to; with service providers that host or operate our infrastructure, under appropriate confidentiality obligations; or when required by law. Information you post publicly in our community channels, mailing lists, or issue trackers is public by nature.

Retention and security

We retain information only as long as necessary for the purposes described above or as required by law. We protect it with commercially reasonable technical and organizational measures against loss, theft, unauthorized access, disclosure, copying, use, or modification. No method of transmission or storage is completely secure.

International transfers

Our services may be hosted in different countries, so your information may be processed outside the country where you live. We take reasonable steps to protect it as described in this policy.

Your choices and rights

You may decline to provide personal information, though doing so may limit your ability to use some features. You may ask us to access, correct, or delete your personal information, or object to its processing, by contacting us. Depending on your location, you may have additional rights under applicable data protection laws.

Children

Our websites and services are not directed to children under the age of 13, and we do not knowingly collect personal information from children.

Google user data

When you sign in with Google, we access only the basic profile information described above. Our use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. We do not use Google user data for advertising or sell it.

Changes and contact

We may update this policy from time to time. The current version is always available on this page. Continued use of our website after an update indicates acceptance of the revised policy. For questions or requests about how we handle your data, contact us at casbin@googlegroups.com.

Effective: 29 June 2020. Last updated: 1 November 2026.