EchoSafe: Sonar-based Verifiable Interaction with Intelligent Digital Agents
EchoSafe: Sonar-based Verifiable Interaction with Intelligent Digital Agents
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DOI：
10.1145/3137003.3137014
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发表时间：
2017-11
期刊：
影响因子：
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通讯作者：
Amr Alanwar;Bharathan Balaji;Yuan Tian;Shuo Yang;M. Srivastava
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文献类型：
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作者：
Amr Alanwar;Bharathan Balaji;Yuan Tian;Shuo Yang;M. Srivastava
声控交互式智能扬声器，如Google Home、Amazon Echo和Apple HomePod在当今家庭中正变得司空见惯。这些设备不断地监听用户的命令，这些命令是由特殊关键字触发的，比如“Alexa”和“嘿Siri”。最近的研究表明，这些设备很容易受到来自附近设备的恶意语音命令的攻击。这些命令可以在空闲期间轻松发送，因此用户可能不知道此类攻击。我们介绍了EchoSafe，这是一种用户友好的基于声纳的防御措施，可抵御这些攻击。当用户向智能扬声器发送关键命令时，EchoSafe会发送音频脉冲，然后进行后处理，以确定用户是否在房间中。我们能够在关键命令期间检测到用户的存在，准确率为93.13%，并且我们的解决方案也可以扩展到防御其他攻击场景。
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 are triggered by special keywords, such as "Alexa" and "Hey Siri". Recent research has shown that these devices are vulnerable to attacks through malicious voice commands from nearby devices. The commands can be sent easily during unoccupied periods, so that the user may be unaware of such attacks. We present EchoSafe, a user-friendly sonar-based defense against these attacks. When the user sends a critical command to the smart speaker, EchoSafe sends an audio pulse followed by post processing to determine if the user is present in the room. We can detect the user's presence during critical commands with 93.13% accuracy, and our solution can be extended to defend against other attack scenarios, as well.