Defeating hidden audio channel attacks on voice assistants via audio-induced surface vibrations. - Chen Wang 009; S. Abhishek Anand; Jian Liu 001; Payton Walker; Yingying Chen 001; Nitesh Saxena (ACSAC, 2019)

Compromising Speech Privacy under Continuous Masking in Personal Spaces. - S. Abhishek Anand; Payton Walker; Nitesh Saxena (PST, 2019)

Evaluating the Effectiveness of Protection Jamming Devices in Mitigating Smart Speaker Eavesdropping Attacks Using Gaussian White Noise. - Payton Walker; Nitesh Saxena (ACSAC, 2021)

HVAC: Evading Classifier-based Defenses in Hidden Voice Attacks. - Yi Wu 020; Xiangyu Xu 001; Payton R. Walker; Jian Liu 001; Nitesh Saxena; Yingying Chen 001; Jiadi Yu (AsiaCCS, 2021)

Face-Mic: inferring live speech and speaker identity via subtle facial dynamics captured by AR/VR motion sensors. - Cong Shi 004; Xiangyu Xu 001; Tianfang Zhang; Payton Walker; Yi Wu 020; Jian Liu 001; Nitesh Saxena; Yingying Chen 001; Jiadi Yu (MobiCom, 2021)

SoK: assessing the threat potential of vibration-based attacks against live speech using mobile sensors. - Payton Walker; Nitesh Saxena (WISEC, 2021)

Hearing Check Failed: Using Laser Vibrometry to Analyze the Potential for Hard Disk Drives to Eavesdrop Speech Vibrations. - Payton Walker; Shalini Saini; S. Abhishek Anand; Tzipora Halevi; Nitesh Saxena (AsiaCCS, 2022)

Laser Meager Listener: A Scientific Exploration of Laser-based Speech Eavesdropping in Commercial User Space. - Payton Walker; Nitesh Saxena (EuroS&P, 2022)

Personalized health monitoring via vital sign measurements leveraging motion sensors on AR/VR headsets. - Tianfang Zhang; Cong Shi 004; Tianming Zhao 001; Zhengkun Ye; Payton Walker; Nitesh Saxena; Yan Wang 003; Yingying Chen 001 (MobiSys, 2022)

BiasHacker: Voice Command Disruption by Exploiting Speaker Biases in Automatic Speech Recognition. - Payton Walker; Nathan McClaran; Zihao Zheng; Nitesh Saxena; Guofei Gu (WISEC, 2022)

Passive Vital Sign Monitoring via Facial Vibrations Leveraging AR/VR Headsets. - Tianfang Zhang; Cong Shi 004; Payton Walker; Zhengkun Ye; Yan Wang 003; Nitesh Saxena; Yingying Chen 001 (MobiSys, 2023)

Privacy Leakage via Unrestricted Motion-Position Sensors in the Age of Virtual Reality: A Study of Snooping Typed Input on Virtual Keyboards. - Yi Wu 020; Cong Shi 004; Tianfang Zhang; Payton Walker; Jian Liu 001; Nitesh Saxena; Yingying Chen 001 (SP, 2023)

BarrierBypass: Out-of-Sight Clean Voice Command Injection Attacks through Physical Barriers. - Payton Walker; Tianfang Zhang; Cong Shi 004; Nitesh Saxena; Yingying Chen 001 (WISEC, 2023)

"Alexa, Is Dynamic Content Safe?" Understanding the Risks of Dynamic Content in the Alexa Skill Ecosystem. - Nathan McClaran; Payton Walker; Zihao Zheng; Yangyong Zhang; Nitesh Saxena; Guofei Gu (WISEC, 2025)