Jun Ho Huh

schoolSamsungbar_chart#1163 Global Rank

Total Papers

HCI Rank

#1163

Research Areas

Years Active

Recent Publications

"I just have faith in my wallet to not mismanage my crypto": Investigating Changes in Users' Security Perceptions Post-FTX Collapse

Non-custodial wallets (NCWs) grant users full control over their keys and crypto assets, whereas custodial wallets (CWs) rely on centralized exchanges. Security breaches at major exchanges are on the rise, exemplified by the 2022 FTX fraud, yet their influence on users' security perceptions and risk mitigation behavio…

CHI '253rd AuthorPasswords & Authentication +1

Understanding and Improving User Adoption and Security Awareness in Password Checkup Services

Password checkup services (PCS) identify compromised, reused, or weak passwords, helping users secure at-risk accounts. However, adoption rates are low. We investigated factors influencing PCS use and password change challenges via an online survey (n=238). Key adoption factors were "perceived usefulness," "ease of us…

CHI '242nd AuthorPasswords & Authentication +1

SkullID: Through-Skull Sound Conduction based Authentication for Smartglasses

This paper investigates the use of through-skull sound conduction to authenticate smartglass users. We mount a surface transducer on the right mastoid process to play cue signals and capture skull-transformed audio responses through contact microphones on various skull locations. We use the resultant bio-acoustic info…

UBICOMP '231st AuthorPasswords & Authentication +1

On the Long-Term Effects of Continuous Keystroke Authentication: Keeping User Frustration Low through Behavior Adaptation

"One of the main challenges in deploying a keystroke dynamics-based continuous authentication scheme on smartphones is ensuring low error rates over time. Unstable false rejection rates (FRRs) would lead to frequent phone locks during long-term use, and deteriorating attack detection rates would jeopardize its securit…

UBICOMP '231st AuthorFoot & Wrist Interaction +1

WristAcoustic: Through-Wrist Acoustic Response Based Authentication for Smartwatches

PIN and pattern lock are difficult to accurately enter on small watch screens, and are vulnerable against guessing attacks. To address these problems, this paper proposes a novel implicit biometric scheme based on through-wrist acoustic responses. A cue signal is played on a surface transducer mounted on the dorsal wr…

CHI '232nd AuthorPasswords & Authentication

GestureMeter: Design and Evaluation of a Gesture Password Strength Meter

Gestures drawn on touchscreens have been proposed as an authentication method to secure access to smartphones. They provide good usability and a theoretically large password space. However, recent work has demonstrated that users tend to select simple or similar gestures as their passwords, rendering them susceptible…

CHI '213rd AuthorPrivacy by Design & User Control +2

On Smartphone Users' Difficulty with Understanding Implicit Authentication

Implicit authentication (IA) has recently become a popular approach for providing physical security on smartphones. It relies on behavioral traits (e.g., gait patterns) for user identification, instead of biometric data or knowledge of a PIN. However, it is not yet known whether users can understand the semantics of t…

CHI '192nd AuthorIntelligent Voice Assistants (Alexa, Siri, etc.) +2

Voice Presentation Attack Detection through Text-Converted Voice Command Analysis

Voice assistants are quickly being upgraded to support advanced, security-critical commands such as unlocking devices, checking emails, and making payments. In this paper, we explore the feasibility of using users' text-converted voice command utterances as classification features to help identify users' genuine comma…

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