Firebase Security issue in creating user accounts using javascript -

i've been using javascript create users in firebase .this code given in firebase guide

var ref = new firebase("https://<your-firebase-app>.firebaseio.com");     ref.createuser({       email    : "bobtony@firebase.com",       password : "correcthorsebatterystaple" } 

this data available browser console , can security threat (any 1 can create account themselves) there security measure can take prevent ?

absolutely,

the way firebase handles security bit different (by own admission). here basic concepts:

authentication

firebase provides tools allowing authentication, these include

• integrations facebook, github, google, , twitter authentication providers
• email & password login, , account management
• single-session anonymous login
• and custom login tokens

authorization

firebase allows specify rules live on firebase servers via account dashboard

data validation

firebase has set of rules in language includes .validate rule. use specify declarative validation rules .read , .write rules

in specific case, write declarative rules limit write access app. this:

{   "rules": {     "userslocation": {       ".read": true,       ".write": false,               }   } }