Firebase Security Rules

To secure Firebase Firestore with a default deny posture, you deny all access by default and explicitly allow only authenticated operations, ownership checks, and data validation conditions. This ensures strict access control for sensitive user data.

The best way to enforce ownership and authentication in Firebase Storage rules is requiring request auth checks and validating file ownership before permitting uploads. You also apply data validation through file type and size checks for robust storage protections.

Yes, you can implement role-based access control for admin actions using Firebase Security Rules. The rules enforce data schemas and validate specific user roles, ensuring only explicitly permitted admin operations are allowed under a strict default deny posture.

You validate data schemas and prevent unauthorized file uploads by applying strict Firebase Security Rules. These rules require authentication, validate request data against expected schemas, and restrict Storage uploads by checking file type and size constraints.

App Check is not strictly required to implement Firebase Security Rules, but it is considered a best practice alongside default deny, authentication, and ownership validation to protect Firestore and Storage data from unauthorized access.