Violating privacy through walls by passive monitoring of radio windows

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Publication Type pre-print
School or College College of Engineering
Department Computing, School of
Creator Kasera, Sneha K.
Other Author Banerjee, Arijit; Maas, Dustin; Bocca, Maurizio; Patwari, Neal
Title Violating privacy through walls by passive monitoring of radio windows
Date 2014-01-01
Description We investigate the ability of an attacker to passively use an otherwise secure wireless network to detect moving people through walls. We call this attack on privacy of people a "monitoring radio windows" (MRW) attack. We design and implement the MRW attack methodology to reliably detect when a person crosses the link lines between the legitimate transmitters and the attack receivers, by using physical layer measurements. We also develop a method to estimate the direction of movement of a person from the sequence of link lines crossed during a short time interval. Additionally, we describe how an attacker may estimate any artificial changes in transmit power (used as a countermeasure), compensate for these power changes using measurements from sufficient number of links, and still detect line crossings. We implement our methodology on WiFi and ZigBee nodes and experimentally evaluate the MRW attack by passively monitoring human movements through external walls in two real-world settings. We find that achieve close to 100% accuracy in detecting line crossings and determining direction of motion, even through reinforced concrete walls.
Type Text
Publisher Creative Commons License
First Page 69
Last Page 80
Language eng
Bibliographic Citation Banerjee, A., Maas, D., Bocca, M., Patwari, N., & Kasera, S. (2014). Violating privacy through walls by passive monitoring of radio windows. WiSec 2014 - Proceedings of the 7th ACM Conference on Security and Privacy in Wireless and Mobile Networks, 69-80.
Rights Management (c) Creative Commons License. http://creativecommons.org/licenses/by/2.5/
Format Medium application/pdf
Format Extent 838,224 bytes
Identifier uspace,18980
ARK ark:/87278/s62c275t
Setname ir_uspace
Date Created 2014-10-17
Date Modified 2021-05-06
ID 712703
Reference URL https://collections.lib.utah.edu/ark:/87278/s62c275t
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