Audio Hotspot Attack: An Attack on Voice Assistance Systems Using Directional Sound Beams
Audio Hotspot Attack: An Attack on Voice Assistance Systems Using Directional Sound Beams
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DOI：
10.1145/3243734.3278497
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
Ryo Iijima;Shota Minami;Yunao Zhou;T. Takehisa;Takeshi Takahashi;Yasuhiro Oikawa;Tatsuya Mori
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文献类型：
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作者：
Ryo Iijima;Shota Minami;Yunao Zhou;T. Takehisa;Takeshi Takahashi;Yasuhiro Oikawa;Tatsuya Mori
我们提出了一种名为“音频热点攻击”的新型攻击，它执行一种听不见的恶意语音命令攻击，目标是语音辅助系统，例如，智能扬声器或车载导航系统。这种攻击利用了从参数扬声器产生的定向声束，该参数扬声器发出AM调制的超声波，这些超声波将在空气中自解调。它可以在长距离（2- 4米的小房间和10米以上的长走廊）的攻击成功。为了评估攻击的可行性，我们进行了广泛的实验室实验和涉及20名参与者的用户研究。结果表明，该攻击在现实世界中是可行的。
We propose a novel attack named "Audio Hotspot Attack'', which performs an inaudible malicious voice command attack, targeting voice assistance systems, e.g., smart speakers or in-car navigation systems. This attack leverages directional sound beams generated from parametric loudspeakers, which emit AM-modulated ultrasounds that will be self-demodulated in the air. It can succeed in the attack on a long distance (2--4 meters in a small room and 10+ meter in a long hallway). To evaluate the feasibility of the attack, we performed extensive in-lab experiments and a user study involving 20 participants. The results demonstrate that the attack is feasible in a real-world setting.