EchoSafe

• DOI: 10.1145/3137003.3137014
• Publication Date: 2017-12-29T14:22:01Z
• Authors: Amr Alanwar; Bharathan Balaji; Yuan Tian; Shuo Yang; Mani Srivastava
• Keywords: Echo (communications protocol); Voice command device

Voice controlled interactive smart speakers, such as Google Home, Amazon Echo, and Apple HomePod are becoming commonplace in today's homes. These devices listen continually for the user commands, that triggered by special keywords, "Alexa" "Hey Siri". Recent research has shown these vulnerable to attacks through malicious voice commands from nearby devices. The can be sent easily during unoccupied periods, so may unaware of attacks. We present EchoSafe, a user-friendly sonar-based defense against When sends critical command speaker, EchoSafe an audio pulse followed post processing determine if is room. detect user's presence with 93.13% accuracy, our solution extended defend other attack scenarios, well.