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Voice assistants offer a convenient and hands-free way of accessing computing in the home, but a key problem with speech as an interaction modality is how to scaffold accurate mental models of voice assistants, a task complicated by privacy…

Human-Computer Interaction · Computer Science 2022-11-24 William Seymour , Jose Such

Privacy in speech and audio has many facets. A particularly under-developed area of privacy in this domain involves consideration for information related to content and context. Speech content can include words and their meaning or even…

Audio and Speech Processing · Electrical Eng. & Systems 2023-01-24 Jennifer Williams , Karla Pizzi , Shuvayanti Das , Paul-Gauthier Noe

Virtual personal assistants (VPA) (e.g., Amazon Alexa and Google Assistant) today mostly rely on the voice channel to communicate with their users, which however is known to be vulnerable, lacking proper authentication. The rapid growth of…

Cryptography and Security · Computer Science 2018-07-02 Nan Zhang , Xianghang Mi , Xuan Feng , XiaoFeng Wang , Yuan Tian , Feng Qian

With the recent advance in speech technology, smart voice assistants have been improved and are now used by many people. But often these assistants are running online as a cloud service and are not always known for a good protection of…

Cryptography and Security · Computer Science 2025-03-28 Daniel Bermuth , Alexander Poeppel , Wolfgang Reif

Much has been written about privacy in the context of conversational and voice assistants. Yet, there have been remarkably few developments in terms of the actual privacy offered by these devices. But how much of this is due to the…

Human-Computer Interaction · Computer Science 2023-06-09 Trung Dong Huynh , William Seymour , Luc Moreau , Jose Such

In the IoT world, intelligent virtual assistant (IVA) is a popular service to interact with users based on voice command. For optimal performance and efficient data management, famous IVAs like Amazon Alexa and Google Assistant usually…

Computers and Society · Computer Science 2018-03-02 Hyunji Chung , Sangjin Lee

In this study, we investigate the emerging threat of inaudible acoustic attacks targeting digital voice assistants, a critical concern given their projected prevalence to exceed the global population by 2024. Our research extends the…

Cryptography and Security · Computer Science 2023-12-04 Forrest McKee , David Noever

As the use of Voice Processing Systems (VPS) continues to become more prevalent in our daily lives through the increased reliance on applications such as commercial voice recognition devices as well as major text-to-speech software, the…

Cryptography and Security · Computer Science 2021-12-28 Robert Chang , Logan Kuo , Arthur Liu , Nader Sehatbakhsh

Speech technology for communication, accessing information, and services has rapidly improved in quality. It is convenient and appealing because speech is the primary mode of communication for humans. Such technology, however, also presents…

Audio and Speech Processing · Electrical Eng. & Systems 2025-11-11 Tom Bäckström

Voice assistive technologies have given rise to far-reaching privacy and security concerns. In this paper we investigate whether modular automatic speech recognition (ASR) can improve privacy in voice assistive systems by combining…

Computation and Language · Computer Science 2021-04-05 Ranya Aloufi , Hamed Haddadi , David Boyle

Voice privacy approaches that preserve the anonymity of speakers modify speech in an attempt to break the link with the true identity of the speaker. Current benchmarks measure speaker protection based on signal-to-signal comparisons. In…

Sound · Computer Science 2026-03-25 Mehtab Ur Rahman , Martha Larson , Cristian Tejedor-Garcia

Privacy is of worldwide concern regarding activities and processes that include sensitive data. For this reason, many countries and territories have been recently approving regulations controlling the extent to which organizations may…

Cryptography and Security · Computer Science 2022-04-05 Samuel Sousa , Christian Guetl , Roman Kern

Using our voices to access, and interact with, online services raises concerns about the trade-offs between convenience, privacy, and security. The conflict between maintaining privacy and ensuring input authenticity has often been hindered…

Computers and Society · Computer Science 2023-02-28 Ranya Aloufi , Hamed Haddadi , David Boyle

The radical advances in telecommunications and computer science have enabled a myriad of applications and novel seamless interaction with computing interfaces. Voice Assistants (VAs) have become a norm for smartphones, and millions of VAs…

Cryptography and Security · Computer Science 2023-02-22 Domna Bilika , Nikoletta Michopoulou , Efthimios Alepis , Constantinos Patsakis

Development and growth of Internet of Things (IoT) technology has exponentially increased over the course of the last 10 years since its inception, and as a result has directly influenced the popularity and size of smart homes. In this…

Cryptography and Security · Computer Science 2020-10-30 Fraser Hall , Leandros Maglaras , Theodoros Aivaliotis , Loukas Xagoraris , Ioanna Kantzavelou

With the development of smart devices, such as the Amazon Echo and Apple's HomePod, speech data have become a new dimension of big data. However, privacy and security concerns may hinder the collection and sharing of real-world speech data,…

Cryptography and Security · Computer Science 2020-04-17 Yaowei Han , Sheng Li , Yang Cao , Qiang Ma , Masatoshi Yoshikawa

Equipped with artificial intelligence (AI) and advanced sensing capabilities, social robots are gaining interest among consumers in the United States. These robots seem like a natural evolution of traditional smart home devices. However,…

Computers and Society · Computer Science 2025-07-17 Henry Bell , Jabari Kwesi , Hiba Laabadli , Pardis Emami-Naeini

Conversational AI (CAI) systems which encompass voice- and text-based assistants are on the rise and have been largely integrated into people's everyday lives. Despite their widespread adoption, users voice concerns regarding privacy,…

Human-Computer Interaction · Computer Science 2025-02-27 Anna Leschanowsky , Silas Rech , Birgit Popp , Tom Bäckström

Voice User Interfaces (VUIs) are increasingly popular and built into smartphones, home assistants, and Internet of Things (IoT) devices. Despite offering an always-on convenient user experience, VUIs raise new security and privacy concerns…

Audio and Speech Processing · Electrical Eng. & Systems 2020-09-07 Ranya Aloufi , Hamed Haddadi , David Boyle

The growing capabilities of large language models and multimodal systems have spurred interest in voice-first AI assistants, yet existing benchmarks are inadequate for evaluating the full range of these systems' capabilities. We introduce…

Computation and Language · Computer Science 2025-09-29 Ke Wang , Houxing Ren , Zimu Lu , Mingjie Zhan , Hongsheng Li