You should know by now, but it is more important everyday to be vigilant with your mobile security.

Network World interviews Domingo Guerra, co-founder of Appthority, a company looks at mobile apps to discover exactly what the app is doing on the device, to discuss just that.

Guerra says it's also common for permissions to be written so generically that it's not explicit what the user is granting access to. There are apps that say they are going to work in the background but what they really mean is that the app will be on all the time and therefore collecting data all the time, even when the user is not necessarily using it. The app can be surreptitiously collecting information on the user 24/7.

 How mobile apps can take whatever data they want from a smartphone