Although smart speakers and other voice assistants are becoming increasingly ubiquitous,
their always-standby nature continues to prompt significant privacy concerns. To address …

Modern mobile systems such as smartphones, tablets, and wearables contain a plethora of
sensors such as camera, microphone, GPS, and accelerometer. Moreover, being mobile …

Smart speakers come with always-on microphones to facilitate voice-based interaction. To
address user privacy concerns, existing devices come with a number of privacy features: eg …

Intelligent voice assistants (IVAs) and other voice-enabled devices already form an integral
component of the Internet of Things and will continue to grow in popularity. As their …

Voice assistants (VAs) are becoming highly popular recently as a general means of
interacting with the Internet of Things. However, the use of always-on microphones on VAs …

Voice-activated commands have become a key feature of popular devices such as
smartphones, home assistants, and wearables. For convenience, many people configure …

Voice assistants like Siri enable us to control IoT devices conveniently with voice
commands, however, they also provide new attack opportunities for adversaries. Previous …

The popularity and projected growth of in-home smart speaker assistants, such as Amazon's
Echo, has raised privacy concerns among consumers and privacy advocates. Notable …

Audio-based sensing enables fine-grained human activity detection, such as sensing hand
gestures and contact-free estimation of the breathing rate. A passive adversary, equipped …

According to recent research, motion sensors available on current smartphone platforms
may be sensitive to speech signals. From a security and privacy perspective, this raises a …