Android app protection using same identifier attack defensor

Abstract

Android app is often used at multiple devices of one user. Sometimes, an app recognizes another device to be the same device which it has known, and bypasses its authentication process. As a result, an attacker can get the same privilege as the original device owner has for the app. In this paper, we show how to get the privilege of the device owner in Android app and how to defend against the attack by Same Identifier Attack Defensor.