WindTalker allows attacker to know sensitive keystrokes on mobile device through WiFi-based side-channel #MobileSecurity

by , under Uncategorized

Keystrokes on mobile devices will lead to different hand coverage and the finger motions, which will introduce a unique interference to the multi-path signals and can be reflected by the channel state information (CSI). The adversary can exploit the strong correlation between the CSI fluctuation and the keystrokes to infer the user’s number input. WindTalker presents a novel approach to collect the target’s CSI data by deploying a public WiFi hotspot.

Source: sig-alternate-sample.pdf – p1068-li.pdf

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