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cs.CR2026
An Empirical Study of Privacy Leakage Chains via Prompt Injection in Black-Box Chatbot Environments
Hongjang Yang, Hyunsik Na, Daeseon Choi
LLM-based chatbot agents increasingly process user requests by combining natural-language reasoning with external tools such as web browsing. These capabilities improve usability,…
cs.CR2025
Beyond Fixed and Dynamic Prompts: Embedded Jailbreak Templates for Advancing LLM Security
Hajun Kim, Hyunsik Na, Daeseon Choi
As the use of large language models (LLMs) continues to expand, ensuring their safety and robustness has become a critical challenge. In particular, jailbreak attacks that bypass b…
cs.CR2025
Robustness Analysis against Adversarial Patch Attacks in Fully Unmanned Stores
Hyunsik Na, Wonho Lee, Seungdeok Roh +2
The advent of convenient and efficient fully unmanned stores equipped with artificial intelligence-based automated checkout systems marks a new era in retail. However, these system…