Continuous Authentication for Voice Assistants

Feng, Huanqing; Fawaz, Kassem; Shin, Kang G.

doi:10.1145/3117811.3117823

Cited by 230 publications

(114 citation statements)

References 12 publications

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“…Thus, ensuring that only authorized sources can trigger voice assistance tools is cumbersome. To provide a further authorization layer, the authors in [103] presented VAuth, a system guaranteeing that the voice assistant executes commands coming only from the voice of the owner. At the triggering of the voice assistant, the system collect accelerometer data from a wearable component mounted at the user's side, and it correlates them with signals coming from the microphone, via the MFCC.…”

Section: B Literature Reviewmentioning

confidence: 99%

Short-Range Audio Channels Security: Survey of Mechanisms, Applications, and Research Challenges

Caprolu

Sciancalepore

Pietro

2021

IEEE Commun. Surv. Tutorials

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Short-range audio channels have appealing distinguishing characteristics: ease of use, low deployment costs, and easy to tune frequencies, to cite a few. Moreover, thanks to their seamless adaptability to the security context, many techniques and tools based on audio signals have been recently proposed. However, while the most promising solutions are turning into valuable commercial products, acoustic channels are also increasingly used to launch attacks against systems and devices, leading to security concerns that could thwart their adoption. To provide a rigorous, scientific, security-oriented review of the field, in this paper we survey and classify methods, applications, and use-cases rooted on short-range audio channels for the provisioning of security services-including Two-Factor Authentication techniques, pairing solutions, device authorization strategies, defense methodologies, and attack schemes. Moreover, we also point out the strengths and weaknesses deriving from the use of short-range audio channels. Finally, we provide open research issues in the context of short-range audio channels security, calling for contributions from both academia and industry.

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Section: B Literature Reviewmentioning

confidence: 99%

Short-Range Audio Channels Security: Survey of Mechanisms, Applications, and Research Challenges

Caprolu

Sciancalepore

Pietro

2021

IEEE Commun. Surv. Tutorials

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“…Phase. Next, we compute the phase changes, which are caused by the time (propagation) delay, t. In particular, we consider t as a sum of every time delay taking place at every propagation medium, e.g., in the air or various body layers, as t = Distance from the transmitter to the user l 2 Distance from the user to the receiver d i1…”

Section: Impact Of Human Body On Wi-fi Signalsmentioning

confidence: 99%

Continuous User Authentication by Contactless Wireless Sensing

Wang

Han

2019

IEEE Internet Things J.

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This paper presents BodyPIN, which is a continuous user authentication system by contactless wireless sensing using commodity Wi-Fi. BodyPIN can track the current user's legal identity throughout a computer system's execution. In case the authentication fails, the consequent accesses will be denied to protect the system. The recent rich wireless-based user identification designs cannot be applied to BodyPIN directly, because they identify a user's various activities, rather than the user herself. The enforced to be performed activities can thus interrupt the user's operations on the system, highly inconvenient and not user-friendly. In this paper, we leverage the bio-electromagneetics domain human model for quantifying the impact of human body on the bypassing Wi-Fi signals and deriving the component that indicates a user's identity. Then we extract suitable Wi-Fi signal features to fully represent such an identity component, based on which we fulfill the continuous user authentication design. We implement a BodyPIN prototype by commodity Wi-Fi NICs without any extra or dedicated wireless hardware. We show that BodyPIN achieves promising authentication performances, which is also lightweight and robust under various practical settings. m i=1 t i , where m is the total amount of

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“…Other related studies: VAuth [12] uses a wearable token device to sense the vibrations caused by the speech of the wearer and match the vibration signal with the received voice signal. The matched vibration and voice signals are further used to verify that the voice signal received by a voice assistant is really from the token wearer.…”

Section: Related Workmentioning

confidence: 99%

Towards Touch-to-Access Device Authentication Using Induced Body Electric Potentials

Yan

Song

Tan

et al. 2019

The 25th Annual International Conference on Mobile Computing and Networking

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This paper presents TouchAuth, a new touch-to-access device authentication approach using induced body electric potentials (iBEPs) caused by the indoor ambient electric field that is mainly emitted from the building's electrical cabling. The design of TouchAuth is based on the electrostatics of iBEP generation and a resulting property, i.e., the iBEPs at two close locations on the same human body are similar, whereas those from different human bodies are distinct. Extensive experiments verify the above property and show that TouchAuth achieves high-profile receiver operating characteristics in implementing the touch-to-access policy. Our experiments also show that a range of possible interfering sources including appliances' electromagnetic emanations and noise injections into the power network do not affect the performance of TouchAuth. A key advantage of TouchAuth is that the iBEP sensing requires a simple analog-to-digital converter only, which is widely available on microcontrollers. Compared with existing approaches including intra-body communication and physiological sensing, TouchAuth is a low-cost, lightweight, and convenient approach for authorized users to access the smart objects found in indoor environments. * This work was completed while Yang Li was with Advanced Digital Sciences Center, Illinois at Singapore.• Human-centered computing → Ubiquitous and mobile computing; • Computer systems organization → Embedded and cyber-physical systems; • Networks → Mobile and wireless security.

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Continuous Authentication for Voice Assistants

Cited by 230 publications

References 12 publications

Short-Range Audio Channels Security: Survey of Mechanisms, Applications, and Research Challenges

Short-Range Audio Channels Security: Survey of Mechanisms, Applications, and Research Challenges

Continuous User Authentication by Contactless Wireless Sensing

Towards Touch-to-Access Device Authentication Using Induced Body Electric Potentials

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