Amazon echo dot or the reverberating secrets of IoT devices
Amazon echo dot or the reverberating secrets of IoT devices
复制标题
亚马逊回声点或物联网设备的回响秘密
DOI:
10.1145/3448300.3467820
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Noubir, Guevara
中科院分区:
文献类型:
--
作者:
Giese, Dennis;Noubir, Guevara
Smart speakers, such as the Amazon Echo Dot, are very popular and routinely trusted with private and sensitive information. Yet, little is known about their security and potential attack vectors. We develop and synthesize a set of IoT forensics techniques, apply them to reverse engineer the hardware and software of the Amazon Echo Dot, and demonstrate its lacking protections of private user data. An adversary with physical access to such devices (e.g., purchasing a used one) can retrieve sensitive information such as Wi-Fi credentials, the physical location of (previous) owners, and cyber-physical devices (e.g., cameras, door locks). We show that such information, including all previous passwords and tokens, remains on the flash memory, even after a factory reset. This is due to the wear-leveling algorithms of the flash memory and lack of encryption. We identify and discuss the design flaws in the storage of sensitive information and the process of de-provisioning used devices. We demonstrate the practical feasibility of such attacks on 86 used devices purchased on eBay and flea markets. Finally, we propose secure design alternatives and mitigation techniques.
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影响因子:
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DOI:
10.26438/ijcse/v7i11.2029
发表时间:
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期刊:
International Journal of Computer Sciences and Engineering
影响因子:
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