People

Ryan Chan

PhD, ESE

Research Groups

Vision, Dynamics and Learning Lab

Publications

REALISTA: Realistic Latent Adversarial Attacks that Elicit LLM Hallucinations

Publisher ICML

SECA: Semantically Equivalent and Coherent Attacks for Eliciting LLM Hallucinations

Publisher arXiv

News

GRASP News

GRASP Blog News

Student News

Simple Rephrases Can Confuse Large Language Models

February 16, 2026

Rachleff University Professor - Radiology, Perelman School of Medicine; ESE, Penn Engineering