Xiaofei Xie
3 papers · Latest:
Artificial Intelligence
Beyond Accuracy: Policy Invariance as a Reliability Test for LLM Safety Judges
LLM safety judges are unreliable; their verdicts depend on policy wording, not just agent behavior, leading to flawed safety evaluations.
2605.06161
Cryptography & SecurityARGUS: Defending LLM Agents Against Context-Aware Prompt Injection
ARGUS defends LLM agents against context-aware prompt injection by auditing decisions based on provenance, significantly reducing attack success.
2605.03378
Software EngineeringFrom Exploration to Specification: LLM-Based Property Generation for Mobile App Testing
PropGen automates property generation for Android app testing, effectively finding functional bugs by exploring functionalities and refining properties.
2604.13463
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