Author

Woo-Jin Lee

2 papers indexed here

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

Preprint Aug 2026

Will the User Ever Know? Covert Indirect Prompt Injection Attacks on Tool-Using LLM Agents

As LLM agents take real-world actions through tools, indirect prompt injection (IPI) has emerged as a serious threat. The standard metric, Attack Success Rate (ASR), counts whether an injection succeeds but ignores what the user notices in the agent's final response. Looking at successful injection traces, we find two...

Yunseok Lee, Yunji Kim, Woo-Jin Lee · 0 citations

#artificial intelligence Preprint Aug 2026

Will the User Ever Know? Covert Indirect Prompt Injection Attacks on Tool-Using LLM Agents

ICoA (Induced Covert Attack), an IPI attack designed to induce covert outcomes by steering the agent back to the user task by steering the agent back to the user task after executing the injection is proposed.

Yunseok Lee, Yunji Kim, Woo-Jin Lee · 0 citations