Our paper published by IEEE Transactions on Emerging Topics in Computing is featured on the website of IEEE Spectrum. 

How to Silently Hack a Smart Speaker

A technique using ultrasound can deliver voice commands to systems such as Google Home and Amazon Echo without bystanders picking up on the cues

By Michelle Hampson

The paper is available from the link below:
R. Iijima, S. Minami, Y. Zhou, T. Takehisa, T. Takahashi, Y. Oikawa, and T. Mori, “Audio Hotspot Attack: An Attack on Voice Assistance Systems Using Directional Sound Beams and its Feasibility,” IEEE Transactions on Emerging Topics in Computing PP(99):1-1 · November 2019 (online early access: https://ieeexplore.ieee.org/document/8906174)

 

Photo-illustration: Waseda University/IEEE Spectrum