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Authors: Wei-Han Lee and Ruby B. Lee

Affiliation: Princeton University, United States

Keyword(s): Smartphone, Security, Authentication, Support vector machines, Sensors, Accelerometer, Orientation sensor, magnetometer, Android.

Abstract: The widespread use of smartphones gives rise to new security and privacy concerns. Smartphone thefts account for the largest percentage of thefts in recent crime statistics. Using a victim's smartphone, the attacker can launch impersonation attacks, which threaten the security of the victim and other users in the network. Our threat model includes the attacker taking over the phone after the user has logged on with his password or pin. Our goal is to design a mechanism for smartphones to better authenticate the current user, continuously and implicitly, and raise alerts when necessary. In this paper, we propose a multi-sensors-based system to achieve continuous and implicit authentication for smartphone users. The system continuously learns the owner's behavior patterns and environment characteristics, and then authenticates the current user without interrupting user-smartphone interactions. Our method can adaptively update a user's model considering the temporal change of user's pat terns. Experimental results show that our method is efficient, requiring less than 10 seconds to train the model and 20 seconds to detect the abnormal user, while achieving high accuracy (more than 90%). Also the combination of more sensors provide better accuracy. Furthermore, our method enables adjusting the security level by changing the sampling rate. (More)


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Paper citation in several formats:
Lee, W. and B. Lee, R. (2015). Multi-sensor Authentication to Improve Smartphone Security. In Proceedings of the 1st International Conference on Information Systems Security and Privacy - ICISSP, ISBN 978-989-758-081-9; ISSN 2184-4356, pages 270-280. DOI: 10.5220/0005239802700280

author={Wei{-}Han Lee. and Ruby {B. Lee}.},
title={Multi-sensor Authentication to Improve Smartphone Security},
booktitle={Proceedings of the 1st International Conference on Information Systems Security and Privacy - ICISSP,},


JO - Proceedings of the 1st International Conference on Information Systems Security and Privacy - ICISSP,
TI - Multi-sensor Authentication to Improve Smartphone Security
SN - 978-989-758-081-9
IS - 2184-4356
AU - Lee, W.
AU - B. Lee, R.
PY - 2015
SP - 270
EP - 280
DO - 10.5220/0005239802700280