Protect Sensitive Information against Channel State Information Based Attacks

Jie Zhang, Zhanyong Tang, Rong Li, Xiaojiang Chen, XiaoQing Gong, Dingyi Fang, Zheng Wang
2017 22017 IEEE International Conference on Computational Science and Engineering (CSE) and IEEE International Conference on Embedded and Ubiquitous Computing (EUC)  
Channel state information (CSI) has been recently shown to be useful in performing security attacks in public WiFi environments. By analyzing how CSI is affected by the finger motions, CSI-based attacks can effectively reconstruct text-based passwords and locking patterns. This paper presents WiGuard, a novel system to protect sensitive on-screen gestures in a public place. Our approach carefully exploits the WiFi channel interference to introduce noise into the attacker's CSI measurement to
more » ... uce the success rate of the attack. Our approach automatically detects when a CSI-based attack happens. We evaluate our approach by applying it to protect text-based passwords and pattern locks on mobile devices. Experimental results show that our approach is able to reduces the success rate of CSI attacks from 92% to 42% for text-based passwords and from 82% to 22% for pattern lock.
doi:10.1109/cse-euc.2017.221 dblp:conf/cse/ZhangTLCGFW17 fatcat:uojbltgydfekfguzicizbpy2qu