Publications
2026
COIN: A Live, Large-scale Benchmark for Semantics-to-Input Code Reasoning
Conference on Empirical Methods in Natural Language Processing (EMNLP) 2026
CtxFuzz: Context-Aware Directed Fuzzing via Runtime Fuzzer-Agent Cooperation
Distinguished Paper Award
IEEE/ACM International Conference on Automated Software Engineering (ASE) 2026
SoK: DARPA's AI Cyber Challenge (AIxCC): Competition Design, Architectures, and Lessons Learned
USENIX Security Symposium (USENIX Security) 2026
OSS-CRS: Liberating AIxCC Cyber Reasoning Systems for Real-World Open-Source Security
USENIX WOOT Conference on Offensive Technologies (WOOT) 2026
2025
ATLANTIS: AI-driven Threat Localization, Analysis, and Triage Intelligence System
arXiv
2023
BaseComp: A Comparative Analysis for Integrity Protection in Cellular Baseband Software
USENIX Security Symposium (USENIX Security) 2023
Un-Rocking Drones: Foundations of Acoustic Injection Attacks and Recovery Thereof
Network and Distributed System Security Symposium (NDSS) 2023
Media: Air Force Research Lab
Paralyzing Drones via EMI Signal Injection on Sensory Communication Channels
Network and Distributed System Security Symposium (NDSS) 2023
2022
Watching the Watchers: Practical Video Identification Attack in LTE Networks
USENIX Security Symposium (USENIX Security) 2022
Revisiting Binary Code Similarity Analysis using Interpretable Feature Engineering and Lessons Learned
IEEE Transactions on Software Engineering (TSE)
Improving Large-Scale Vulnerability Analysis of IoT Devices with Heuristics and Binary Code Similarity
Ph.D. Thesis, KAIST
2021
Enabling the Large-Scale Emulation of Internet of Things Firmware With Heuristic Workarounds
IEEE Security & Privacy
BaseSpec: Comparative Analysis of Baseband Software and Cellular Specifications for L3 Protocols
Network and Distributed System Security Symposium (NDSS) 2021
2020
FirmAE: Towards Large-Scale Emulation of IoT Firmware for Dynamic Analysis
Annual Computer Security Applications Conference (ACSAC) 2020
Media: CVEs & PoC Exploits
2019
Who Spent My EOS? On the (In)Security of Resource Management of EOS.IO
USENIX Workshop on Offensive Technologies (WOOT) 2019
2018
Peeking over the Cellular Walled Gardens - A Method for Closed Network Diagnosis
IEEE Transactions on Mobile Computing (TMC)
2017
When Cellular Networks Met IPv6: Security Problems of Middleboxes in IPv6 Cellular Networks
IEEE European Symposium on Security and Privacy (EuroS&P) 2017
2016
Pay As You Want: Bypassing Charging System in Operational Cellular Networks
International Workshop on Information Security Applications (WISA) 2016
Dissecting VoLTE: Exploiting Free Data Channels and Security Problems
M.S. Thesis, KAIST
2015
BurnFit: Analyzing and Exploiting Wearable Devices
Best Paper Award
International Workshop on Information Security Applications (WISA) 2015
Rocking Drones with Intentional Sound Noise on Gyroscopic Sensors
USENIX Security Symposium (USENIX Security) 2015
2014
Analyzing Security of Korean USIM-based PKI Certificate Service
International Workshop on Information Security Applications (WISA) 2014
2013
High-speed automatic segmentation of intravascular stent struts in optical coherence tomography images
SPIE Photonics West, Biomedical Optics (BiOS) 2013