How to restrict Firebase data modification?
<p>Firebase provides database back-end so that developers can focus on the client side code.</p>

<p>So if someone takes my firebase uri (for example, <code>https://firebaseinstance.firebaseio.com</code>) then develop on it <strong>locally</strong>.</p>

<p>Then, would they be able to create another app off my Firebase instance, signup and authenticate themselves to read all data of my Firebase app?</p>