An Empirical Study of Click Fraud in Mobile Advertising Networks. - Geumhwan Cho; Junsung Cho; Youngbae Song; Hyoungshick Kim (ARES, 2015)

A Framework for Security Services Based on Software-Defined Networking. - Jaehoon Jeong 001; Jihyeok Seo; Geumhwan Cho; Hyoungshick Kim; Jung-Soo Park (AINA Workshops, 2015)

On the Effectiveness of Pattern Lock Strength Meters: Measuring the Strength of Real World Pattern Locks. - Youngbae Song; Geumhwan Cho; Seongyeol Oh; Hyoungshick Kim; Jun Ho Huh (CHI, 2015)

Keyboard or keylogger?: A security analysis of third-party keyboards on Android. - Junsung Cho; Geumhwan Cho; Hyoungshick Kim (PST, 2015)

POSTER: WiPING: Wi-Fi signal-based PIN Guessing attack. - Seunghun Cha; Jaewoo Park; Geumhwan Cho; Jun Ho Huh; Hyoungshick Kim (CCS, 2016)

Combating online fraud attacks in mobile-based advertising. - Geumhwan Cho; Junsung Cho; Youngbae Song; Donghyun Choi; Hyoungshick Kim (EURASIP J. Inf. Secur., 2016)

Preventing DNS Amplification Attacks Using the History of DNS Queries with SDN. - Soyoung Kim; Sora Lee; Geumhwan Cho; Muhammad Ejaz Ahmed; Jaehoon (Paul) Jeong; Hyoungshick Kim (ESORICS (2), 2017)

SysPal: System-Guided Pattern Locks for Android. - Geumhwan Cho; Jun Ho Huh; Junsung Cho; Seongyeol Oh; Youngbae Song; Hyoungshick Kim (IEEE Symposium on Security and Privacy, 2017)

Open Sesame! Design and Implementation of Backdoor to Secretly Unlock Android Devices. - Junsung Cho; Geumhwan Cho; Sangwon Hyun; Hyoungshick Kim (J. Internet Serv. Inf. Secur., 2017)

The Personal Identification Chord: A Four ButtonAuthentication System for Smartwatches. - Ian Oakley; Jun Ho Huh; Junsung Cho; Geumhwan Cho; Md. Rasel Islam; Hyoungshick Kim (AsiaCCS, 2018)

Threat Modeling and Analysis of Voice Assistant Applications. - Geumhwan Cho; Jusop Choi; Hyoungshick Kim; Sangwon Hyun; Jungwoo Ryoo (WISA, 2018)

Two-Thumbs-Up: Physical protection for PIN entry secure against recording attacks. - DaeHun Nyang; Hyoungshick Kim; Woojoo Lee; Sung-bae Kang; Geumhwan Cho; Mun-Kyu Lee; Aziz Mohaisen (Comput. Secur., 2018)

Design and Analysis of Push Notification-Based Malware on Android. - Sangwon Hyun; Junsung Cho; Geumhwan Cho; Hyoungshick Kim (Secur. Commun. Networks, 2018)

Understanding Users' Risk Perceptions about Personal Health Records Shared on Social Networking Services. - Yuri Son; Geumhwan Cho; Hyoungshick Kim; Simon S. Woo (AsiaCCS, 2019)

Data-Driven Selection of Security Application Frameworks During Architectural Design. - Humberto Cervantes; Rick Kazman; Jungwoo Ryoo; Junsung Cho; Geumhwan Cho; Hyoungshick Kim; Jina Kang (HICSS, 2019)

On the Security and Usability Implications of Providing Multiple Authentication Choices on Smartphones: The More, the Better? - Geumhwan Cho; Jun Ho Huh; Soolin Kim; Junsung Cho; Heesung Park; Yenah Lee; Konstantin Beznosov; Hyoungshick Kim (ACM Trans. Priv. Secur., 2020)

Towards Usable and Secure Location-based Smartphone Authentication. - Geumhwan Cho; Sungsu Kwag; Jun Ho Huh; Bedeuro Kim; Choong-Hoon Lee; Hyoungshick Kim (SOUPS @ USENIX Security Symposium, 2021)

On the Long-Term Effects of Continuous Keystroke Authentication: Keeping User Frustration Low through Behavior Adaptation. - Jun Ho Huh; Sungsu Kwag; Iljoo Kim; Alexandr Popov; Younghan Park; Geumhwan Cho; Juwon Lee; Hyoungshick Kim; Choong-Hoon Lee (Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., 2023)