Inaudible Sound as a Covert Channel in Mobile Devices

  title={Inaudible Sound as a Covert Channel in Mobile Devices},
  author={Luke Deshotels},
Mobile devices can be protected by a variety of information flow control systems. These systems can prevent Trojans from leaking secrets over network connections. As mobile devices become more secure, attackers will begin to use unconventional methods for exfiltrating data. We propose two sound-based covert channels, ultrasonic and isolated sound. Speakers on mobile devices can produce frequencies too high for most humans to hear. This ultrasonic sound can be received by a microphone on the… CONTINUE READING
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