Academics in the US have developed an attack dubbed NUIT, for Near-Ultrasound Inaudible Trojan, that exploits vulnerabilities in smart device microphones and voice assistants to silently and remotely access smart phones and home devices. The research team — Guenevere Chen, an associate professor at the University of Texas at San Antonio, her doctoral student Qi Xia, and Shouhuai Xu, a professor at the University of Colorado Colorado Springs — found Apple’s Siri, Google’s Assistant, Microsoft’s Cortana, and Amazon’s Alexa are all vulnerable to NUIT attacks, albeit to different degrees.

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