1. Open Firefox Web Browser
2. Then Click on Firefox > Option > Option
3. Then a POP Up box will appear, In that pop up window, go to Security and click on Saved Passwords
4. Now click on the website whose password you want to see and click on Show Password
(Note: It will ask for confirmation so click on yes when dialog box appears)
5. Done, the password has been hacked with few simple steps.
So now you know, saving your password in a Firefox browser is dangerous, so avoid it, if you have been doing it.
Thanks you all.