Home > Research > Publications & Outputs > Defeat Your Enemy Hiding Behind Public WiFi

Electronic data

  • paper_channel_interference_0104

    Accepted author manuscript, 2.95 MB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

Links

Text available via DOI:

View graph of relations

Defeat Your Enemy Hiding Behind Public WiFi: WiGuard Can Protect Your Sensitive information from CSI-based Attack

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
  • Jie Zhang
  • Zhanyong Tang
  • Meng Li
  • Xiaojiang Chen
  • Dingyi Fang
  • Zheng Wang
Close
Article number515
<mark>Journal publication date</mark>28/03/2018
<mark>Journal</mark>Applied Sciences
Issue number4
Volume8
Number of pages24
Publication StatusPublished
<mark>Original language</mark>English

Abstract

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 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 input information in a public place. Our approach carefully exploits WiFi channel interference to introduce noise to attacker’s CSI measurements to reduce the success rate of CSI-based attacks. 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 reduce the success rate of CSI-based attacks from 92–42% for text-based passwords and from 82–22% for pattern lock.