Toward Introduction of Immunity-based Model to Continuous Behavior-based User Authentication on Smart Phone
Yuji Watanabe, Houryu, Tsutomu Fujita · Procedia Computer Science · 2013
Smart phone stores a lot of important private information, so that user authentication is increasingly necessary to prevent attacks by illegal users who are not the owner of the smart phone. Password authentication or biometrics can be generally applied only on login. After the authentication is passed, not only the legal owner but also illegal users freely use the smart phone. Therefore we are trying to develop a behavior-based user authentication system to continuously check the user activities after login. The developing system can extract many operational and behavioral features characteristic of user by multiple sensors; for example, touch screen, accelerometer, microphone, and GPS sensor. And then it can combine the authentication results from the multiple sensors because a single sensor may produce poor authentication accuracy. In this paper, we report the ongoing results of our system, that is, the experimental results from user authentication using touch operational features, and some features extracted from accelerometer. We also discuss the introduction of immunity-based model to our system to integrate the authentication results from the multiple sensors.