Defeating hidden audio channel attacks on voice assistants via audio-induced surface vibrations
Chen Wang, S Abhishek Anand, Jian Liu, Payton Walker, Yingying Jennifer Chen, Nitesh Saxena · 2019
Voice access technologies are widely adopted in mobile devices and voice assistant systems as a convenient way of user interaction. Recent studies have demonstrated a potentially serious vulnerability of the existing voice interfaces on these systems to "hidden voice commands". This attack uses synthetically rendered adversarial sounds embedded within a voice command to trick the speech recognition process into executing malicious commands, without being noticed by legitimate users.