how to prevent others from using my firebase data with firebase ref url? -

this question has answer here:

• how make sure own website (clientside code) can talk firebase backend? 1 answer

i using firebase android app , using anonymous authentication. can see url monitoring requests or reverse engineering app. , make own app firebase url , use use anonymous authentication. how prevent this?

i using anonymous authentication nobody can use rest endpoints.
have read below post don't understand how prevent this.
how prevent other access firebase

my writes authenticated email + password.
reads authenticated anonymous authentication.

you cannot prevent other people seeing firebase url. firebase provides cool dashboard can block non-authorized people fetching database information. make sure have following code under "security & rules" tab:

{ "rules": {    // authenticated users can read or write firebase    ".read": "auth !== null",    ".write": "auth !== null"    } }