2025/01/25 by Zhi-Yuan Ning, Ning, Zhiyuan, Juan He +7 · 2 citations
Engineering · Health Professions · Materials Science · #Antenna Design and Analysis #Cryptography and Security (cs.CR) #FOS: Computer and information sciences #Infant Health and Development #Metamaterials and Metasurfaces Applications
paper · pdf · doi:10.48550/arxiv.2501.15031
openalex publication_date 2025/01/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present METAATTACK, the first approach to leverage acoustic metamaterials for inaudible attacks for voice control systems. Compared to the state-of-the-art inaudible attacks requiring complex and large speaker setups, METAATTACK achieves a longer attacking range and higher accuracy using a compact, portable device small enough to be put into a carry bag. These improvements in portability and stealth have led to the practical applicability of inaudible attacks and their adaptation to a wider range of scenarios. We demonstrate how the recent advancement in metamaterials can be utilized to design a voice attack system with carefully selected implementation parameters and commercial off-the-shelf components. We showcase that METAATTACK can be used to launch inaudible attacks for representative voice-controlled personal assistants, including Siri, Alexa, Google Assistant, XiaoAI, and Xiaoyi. The average word accuracy of all assistants is 76%, with a range of 8.85 m.