Voice application developer experiences with Alexa and Google Assistant : juggling risks, liability, and security

Seymour, William and Abdi, Noura and Ramokapane, Kopo M. and Edu, Jide and Suarez-Tangil, Guillermo and Such, Jose (2024) Voice application developer experiences with Alexa and Google Assistant : juggling risks, liability, and security. In: The 33rd USENIX Security Symposium, 2024-08-14 - 2024-08-16. (In Press)

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Abstract

Voice applications (voice apps) are a key element in Voice Assistant ecosystems such as Amazon Alexa and Google Assistant, as they provide assistants with a wide range of capabilities that users can invoke with a voice command. Most voice apps, however, are developed by third parties---i.e., not by Amazon/Google---and they are included in the ecosystem through marketplaces akin to smartphone app stores but with crucial differences, e.g., the voice app code is not hosted by the marketplace and is not run on the local device. Previous research has studied the security and privacy issues of voice apps in the wild, finding evidence of bad practices by voice app developers. However, developers' perspectives are yet to be explored. In this paper, we report a qualitative study of the experiences of voice app developers and the challenges they face. Our findings suggest that: 1) developers face several risks due to liability pushed on to them by the more powerful voice assistant platforms, which are linked to negative privacy and security outcomes on voice assistant platforms; and 2) there are key issues around monetization, privacy, design, and testing rooted in problems with the voice app certification process. We discuss the implications of our results for voice app developers, platforms, regulators, and research on voice app development and certification.

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