Papers by Feiran Jia
The Task Shield: Enforcing Task Alignment to Defend Against Indirect Prompt Injection in LLM Agents (2025.acl-long)
Copied to clipboard
| Challenge: | Large Language Model (LLM) agents are becoming conversational assistants . indirect prompt injection attacks pose a critical threat to these systems . |
| Approach: | They propose a novel and orthogonal perspective that reframes agent security . they propose 'task shield' that verifies whether each instruction and tool call contributes to user objectives . |
| Outcome: | The proposed defense reduces attack success rates while maintaining high task utility on the AgentDojo benchmark. |
Evidence Retrieval is almost All You Need for Fact Verification (2024.findings-acl)
Copied to clipboard
| Challenge: | Existing evidence retrieval methods adopt a trivial retrieval strategy, resulting in task-irrelevant evidence and undesirable performance. |
| Approach: | They propose a framework for evidence retrieval and joint fact verification that integrates two modules. |
| Outcome: | The proposed framework improves evidence retrieval and claims verification on a FEVER dataset. |