Jaehan Kim

SafeMoE: Safe Fine-Tuning for MoE LLMs by Aligning Harmful Input Routing

Jaehan Kim, Minkyoo Song, Seungwon Shin, Sooel Son

International Conference on Learning Representations (ICLR) (to appear) 2026

Paper

PassREfinder-FL: Privacy-Preserving Credential Stuffing Risk Prediction via Graph-Based Federated Learning for Representing Password Reuse between Websites

Jaehan Kim, Minkyoo Song, Minjae Seo, Youngjin Jin, Seungwon Shin, Jinwoo Kim

Expert Systems with Applications (ESWA) 2025

Paper Code

MoEvil: Poisoning Expert to Compromise the Safety of Mixture-of-Experts LLMs

Jaehan Kim, Seung Ho Na, Minkyoo Song, Seungwon Shin, Sooel Son

Annual Computer Security Applications Conference (ACSAC) 2025
(Distinguished Paper Award)

Paper Code

Obliviate: Neutralizing Task-Agnostic Backdoors within the Parameter-Efficient Fine-Tuning Paradigm

Jaehan Kim, Minkyoo Song, Seung Ho Na, Seungwon Shin

Annual Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics (NAACL) Findings 2025

Paper Code

Claim-Guided Textual Backdoor Attack for Practical Applications

Minkyoo Song, Hanna Kim, Jaehan Kim, Youngjin Jin, Seungwon Shin

Annual Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics (NAACL) Findings 2025

Paper Code

Refusal Is Not an Option: Unlearning Safety Alignment of Large Language Models

Minkyoo Song, Hanna Kim, Jaehan Kim, Seungwon Shin, Sooel Son

USENIX Security Symposium (USENIX Security) 2025

Paper Code

Covering Cracks in Content Moderation: Delexicalized Distant Supervision for Illicit Drug Jargon Detection

Minkyoo Song, Eugene Jang, Jaehan Kim, Seungwon Shin

ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD) 2025

Paper Code

MUFFLER: Secure Tor Traffic Obfuscation with Dynamic Connection Shuffling and Splitting

Minjae Seo, Myoungsung You, Jaehan Kim, Taejune Park, Seungwon Shin, Jinwoo Kim

IEEE International Conference on Computer Communications (INFOCOM) 2025

Paper

CryptoGuard: Lightweight Hybrid Detection and Prevention of Host-Based Cryptojackers

Gyeonghoon Park, Jaehan Kim, Jinu Choi, Jinwoo Kim

ACM Asia Conference on Computer and Communications Security (ASIACCS) 2025

Paper Code

AVXProbe: Enhancing Website Fingerprinting with Side-Channel Assisted Kernel-Level Traces

Suryeon Kim, Seung Ho Na, Jaehan Kim, Seungwon Shin, Hyunwoo Choi

ACM Asia Conference on Computer and Communications Security (ASIACCS) 2025

Paper

PassREfinder: Credential Stuffing Risk Prediction by Representing Password Reuse between Websites on a Graph

Jaehan Kim, Minkyoo Song, Minjae Seo, Youngjin Jin, Seungwon Shin

IEEE Symposium on Security and Privacy (S&P) 2024

Paper Code

HardWhale: A Hardware-Isolated Network Security Enforcement System for Cloud Environments

Myoungsung You, Jaehyun Nam, Hyunmin Seo, Minjae Seo, Jaehan Kim, Dongmin Choi, Seungwon Shin

International Conference on Distributed Computing Systems (ICDCS) 2024

Paper

Hyperion: Hardware-Based High-Performance and Secure System for Container Networks

Myoungsung You, Minjae Seo, Jaehan Kim, Seungwon Shin, Jaehyun Nam

IEEE Transactions on Cloud Computing (TCC) 2024

Paper

gShock: A GNN-based Fingerprinting System for Permissioned Blockchain Networks over Encrypted Channels

Minjae Seo*, Jaehan Kim*, Myoungsung You, Seungwon Shin, Jinwoo Kim (*equally contributed)

IEEE Access 2024

Paper

CENSor: Detecting Illicit Bitcoin Operation via GCN-Based Hyperedge Classification

Suyeol Lee*, Jaehan Kim*, Minjae Seo, Seung Ho Na, Seungwon Shin, Jinwoo Kim (*equally contributed)

IEEE Access 2024

Paper

Heimdallr: Fingerprinting SD-WAN Control-Plane Architecture via Encrypted Control Traffic

Minjae Seo, Jaehan Kim, Eduard Marin, Myoungsung You, Taejune Park, Seungsoo Lee, Seungwon Shin, Jinwoo Kim

Annual Computer Security Applications Conference (ACSAC) 2022

Paper

FuzzDocs: An Automated Security Evaluation Framework for IoT

Myoungsung You, Yeonkeun Kim, Jaehan Kim, Minjae Seo, Sooel Son, Seungwon Shin, Seungsoo Lee

IEEE Access 2022

Paper

Revisiting Security Landscape of Docker Hub Container

Myoungsung You, Jaehan Kim, Seungwon Shin

The Journal of Korean Institute of Communications and Information Sciences 2022

Paper

A Large-Scale Bitcoin Abuse Measurement and Clustering Analysis Utilizing Public Reports

Jinho Choi*, Jaehan Kim*, Minkyoo Song, Hanna Kim, Nahyeon Park, Minjae Seo, Youngjin Jin, Seungwon Shin (*equally contributed)

IEICE Transactions on Information and Systems 2022

Paper