Fireship.io - Firebase Security Course Free Download

Firebase Security - The Full Course will teach you how to write, organize, and test Firestore security rules. The goal is to prepare developers for the safe and secure launch of a Firebase project.
What will I Learn?
Firestore security fundamentals.
How to audit a Firebase app for security vulnerabilities.
Common use-cases including role-based auth, access-control lists, and more.
Advanced techniques and code optimization tips
Unit testing and debugging reports