"Researchers Used Sonar Signal From a Smartphone Speaker to Steal Unlock Passwords"
Researchers from Lancaster University have demonstrated the possibility of using a smartphone's microphone and speaker system to steal the unlock password to the device. The acoustic side-channel attack, called SonarSnoop, can be used by attackers to significantly reduce the amount of unlock patterns that they would have to attempt in order to gain access to the phone. This article continues to discuss the concept and research behind SonarSnoop, along with other acoustic side-channel attacks and the prevention of such attacks.
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