Firebase - secure the database from being deleted entirely

问题

Doing CRUD in firebase is pretty easy and neat IMO. But I am confuse on how to protect the whole database.

So I have this database rules :

{
    "rules": {
        ".read": "auth != null",
        ".write": "auth != null",
    }
}

Let's say I have a bunch of data on my database. If the user is not yet authenticated this code firebase.database().ref('/').set(null) is replying a permission_denied error which is normal.

But the problem is once a certain user logs in and gets authenticated, this code firebase.database().ref('/').set(null) will delete the entire database.

How do I secure this kind of setup? Also when I tried this code firebase.database().ref('/').set(null) on the javascript web console it still deletes the data.

来源：https://stackoverflow.com/questions/39438017/firebase-secure-the-database-from-being-deleted-entirely