Assessment of malicious applications using permissions and enhanced user interfaces on Android

Smartphone OS, such as Android, enables us to install third party applications. However, security threats of malicious applications are rapidly increasing due to the nature of the third party applications where only developers can assign required permissions. For this reason, attackers can inject exploits into a normal application with inappropriately acquired permissions. In this paper, we propose a method to distinguish an application by analyzing permissions set and enhanced user interfaces to improve the chance of making right decisions. The proposed methods are intended for users to make better decisions with more information provided by the system.