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Activity Information Leakage using Music

Activity Information Leakage using Music

by Igor Mikhaylov2017-08-24

Researchers have demonstrated how it is possible to transform a smart device into a surveillance tool that can collect information about the body position and movements of the user, as well as other people in the device’s immediate vicinity. In addition, an attacker may use longer OFDM symbols and perform a correlation. Methods for decoding minute changes caused by human movement at large distances. But a sophisticated attacker could improve CovertBand by using various clever methods to hide the sonar signal.


In this article, the authors show that in the case of microphones and speakers, leakage of confidential information with today’s data is possible, which go beyond the ability to simply record conversations at home.



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