Kai Xu

2 papers · Latest: April 28, 2026

SnapGuard: Lightweight Prompt Injection Detection for Screenshot-Based Web Agents

SnapGuard is a lightweight, multimodal method to detect prompt injection in screenshot-based web agents, outperforming large VLMs in speed and efficiency.

2604.25562Apr 28, 2026

Human-Computer Interaction

Co-Refine: AI-Powered Tool Supporting Qualitative Analysis

Co-Refine is an AI tool that provides real-time feedback on coding consistency in qualitative analysis, preventing temporal drift.

2604.19309Apr 21, 2026

📬 Weekly AI Paper Digest

Get the top 10 AI/ML arXiv papers from the week — summarized, scored, and delivered to your inbox every Monday.