I am a researcher in Usable Privacy and Security, Human-Computer Interaction (HCI), and AI Safety . My work examines how people understand, experience, and respond to privacy and security risks in everyday digital systems, and how these systems can better support human agency, informed decision-making, and meaningful control.
I am particularly interested in privacy and security challenges that emerge from gaps between how systems behave and how users understand, expect, and control them. Using user-centered research methods, I study how these gaps shape users’ privacy and security decisions, and how interactive design can better communicate system behavior, support user control, and reduce the burden placed on users to navigate complex technologies.
More recently, my research has been expanding toward AI safety, including emerging risks such as AI-related psychosis and misalignment between user intent and AI behavior, as well as human-centered approaches to safety guardrails and user control. Across these areas, my broader goal is to advance usable and human-centered approaches to privacy, security, and safety that help people remain active participants in digital systems rather than passive subjects of them.
ANNOUNCEMENTS
Aug 2026 I'll be joining the Usable Privacy & Security Research Group at UC Berkeley EECS / ICSI as a Visiting Scholar, starting October 1, 2026
Apr 2026 OurData, a work very dear to my heart and a concept for analyzing group privacy in multi-user sensing environments, has finally been accepted to IMWUT(UbiComp) after three long years.
Mar 2026 I'm teaching 'CS374: Introduction to HCI' at KAIST School of Computing (Spring 2026)
Jan 2026 Two papers have been accepted to CHI!!
📂 News from 2025
Oct 2025 Our research on using Home IoT for emotional wellbeing has been featured across multiple media outlets.
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Sep 2025 In Fall 2025, I’ll be teaching 'CS492: Human-Centered Security & Privacy (Usable Security & Privacy)' at KAIST School of Computing
Sep 2025 Joined the national PoC project on 'Collaborative Intelligence Physical AI,' led by KAIST with academic and regional partners
Jul 2025 My first Ph.D. mentee, Youngji Koh’s paper "Harnessing Home IoT for Self-Tracking Emotional Wellbeing: Behavioral Patterns, Self-Reflection, and Privacy Concerns" is accepted for publication in IMWUT (UbiComp) 2025!!
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Jul 2025 Gave a talk at KCC 2025 (Early-Career Researcher Session)
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Jun 2025 Served as 2025 UbiComp/ISWC Poster/Demo Track committee member
Feb 2025 Gave a talk on 'An Empirical Study on LLM-Driven Privacy Attacks and Assessing Privacy Risks' (Multi-Modal AI Safety Benchmark Workshop, IEEE BigComp'25)
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📂 News from 2024
Nov 2024 Presented 'FamilyScope: Visualizing Affective Aspects of Family Social Interactions using Passive Sensor Data' at CSCW'24 (San José, Costa Rica)
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Oct 2024 Joined the 'Multimodal Benchmark Dataset for AI Safety' project by TTA (Telecommunications Technology Association) and KAKAO
Aug 2024 Started research project with Oded Nov’s team at NYU on OurData—a new concept supporting multi-user data in smart home sensing contexts
Jun 2024 Gave a talk on 'User-Friendly Privacy Design in Ubiquitous Computing' at KCC'24 (Jeju island, South Korea)
May 2024 Presented 'PriviAware: Exploring Data Visualization and Dynamic Privacy Control Support for Data Collection in Mobile Sensing Research' at CHI'24 (Hawaii, USA)
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Apr 2024 Gave a talk on 'Supporting User Data Privacy in Digital Healthcare Systems' at Yonsei University (Graduate School of Information Science)
PUBLICATIONS
OurData: Understanding Family Privacy in Sensor-Rich Homes
Hyunsoo Lee, Reza Ghaiumy Anaraky, Oded Nov, Uichin Lee
In the Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT) (Shanghai, China, Oct 10-14, 2026), IMWUT'26
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Mind the SIM: Awareness and Mental Models in a South Korean Case Study
Hyunsoo Lee, Seyoung Jin, Hyoungshick Kim, Uichin Lee
Proceedings of the ACM Conference on Human Factors in Computing Systems (Barcelona, Spain, Apr 13-17, 2026), CHI'26
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Why stressed, Mom?: Exploring Family Reflection on Social and Emotional Sensor Data through Family Informatics
Hyesoo Park, Sueun Jang, Hyunsoo Lee* (Corresponding author), Gahee Kim, Uichin Lee
Proceedings of the ACM Conference on Human Factors in Computing Systems (Barcelona, Spain, Apr 13-17, 2026), CHI'26
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Harnessing Home IoT for Self-tracking Emotional Wellbeing: Behavioral Patterns, Self-Reflection, and Privacy Concerns
Youngji Koh, Chanhee Lee, Eunki Joung, Hyunsoo Lee* (Corresponding author),Uichin Lee
In the Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT) (Espoo, Finland, Oct 14-16, 2025).
UbiComp’25
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FamilyScope: Visualizing Affective Aspects of Family Social Interactions using Passive Sensor Data
Hyunsoo Lee, Yugyeong Jung, Youwon Shin, Hyesoo Park, Woohyeok Choi, Uichin Lee
The ACM Conference on Computer-Supported Cooperative Work and Social Computing (San José, Costa Rica, Nov 9-13, 2024), CSCW'24
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PriviAware: Exploring Data Visualization and Dynamic Privacy Control Support for Data Collection in Mobile Sensing Research
Hyunsoo Lee, Yugyeong Jung, Emily Law, Seolyeong Bae, Uichin Lee
Proceedings of the ACM Conference on Human Factors in Computing Systems (Hawaii, USA, May 11-16, 2024), CHI'24
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Toward Dynamic Consent for Privacy-Aware Pervasive Health and Well-being: A scoping review and research directions
Hyunsoo Lee, Uichin Lee
IEEE International Conference on Pervasive Computing and Communications, IEEE’22
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Understanding Perceived Benefits and Privacy Risks in Open Dataset Collection for Mobile Affective Computing
Hyunsoo Lee, Soowon Kang, Uichin Lee
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT/UbiComp)(Cambridge, UK, Sep 11-15, 2022), IMWUT'22
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Smart Home IoT Technology and Privacy Research Trends
Youwon Shin, Hyunsoo Lee, Woohyeok Choi, Heepyung Kim, Yong Jeong, Uichin Lee
Korea Computer Congress, KCC'22
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Pilot System Design Study for User-Friendly Mobile/Wearable Sensor Data Collection
Jinhyuk Jang, Hyunsoo Lee, Uichin Lee
Korea Computer Congress, KCC'22
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Dynamic Consent for Sensor-Driven Research
Hyunsoo Lee, Uichin Lee
International Conference on Mobile Computing and Ubiquitous Networking (Tokyo, Japan, Nov 17-19, 2021), ICMU'21
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Sticky Goals: Understanding Goal Commitments for Behavioral Changes in the Wild
Hyunsoo Lee, Auk Kim, Hwajung Hong, Uichin Lee
Proceedings of the ACM Conference on Human Factors in Computing Systems (Yokohama, Japan, May 8-13, 2021), CHI'21
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GoldenTime: Exploring System-Driven Timeboxing and Micro-Financial Incentives for Self-Regulated Phone Use
Joonyoung Park, Hyunsoo Lee, Sangkeun Park, Kyong-Mee Chung, Uichin Lee
Proceedings of the ACM Conference on Human Factors in Computing Systems (Yokohama, Japan, May 8-13, 2021), CHI'21
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Privacy Concerns of Digital Phenotyping for Older Adults with Mental Health Issues
Hyunsoo Lee, Uichin Lee
ACM CHI 2020 NETWORKED PRIVACY WORKSHOP (Hawaii, USA, April 25-30, 2020), CHI'20
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LocknType: Lockout Task Intervention for Discouraging Smartphone App Use
Jaejeung Kim, Joonyoung Park, Hyunsoo Lee, Minsam Ko, Uichin Lee
Proceedings of the ACM Conference on Human Factors in Computing Systems (Glasgow, Scotland UK, May 4-9, 2019), CHI'19
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Positive Computing for Digital Wellbeing
Uichin Lee, Hyunsoo Lee, Joonyoung Park
Designing for Digital Wellbeing: A Research & Practice Agenda (Glasgow, Scotland UK, May 4-9, 2019), CHI'19
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Commitment devices in online behavior change support systems
Hyunsoo Lee, Hwajung Hong, Uichin Lee
AsianHCI’19: Proceedings of Asian CHI Symposium 2019: Emerging HCI Research Collection (Glasgow, Scotland UK, May 4-9, 2019), CHI'19
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