activity
20202026
most citedSecAlign: Defending Against Prompt Injection with Preference Optimization

17 citations · 27 across the 13 of their papers we have counts for

collaborators

13 papers

cs.CR2026

Repeat-After-Me: Black-Box Adaptive Visual Prompt Injection

Sizhe Chen, Yu-Lin Tsai, Ivan Evtimov +4

Prompt injection is widely recognized as a major security threat to AI agents that interact with untrusted external data, such as websites, documents, and emails. Prior work has sh…

cs.CR2026

SecOPD: Mitigating Adaptive Prompt Injections by On-Policy Distillation

Yibo Peng, Long Lian, David Wagner +1

Prompt injection is listed as the \#1 threat to AI agents. When an agent accesses external data from websites, files, or emails, an attacker may inject a prompt into the data, sayi…

cs.LG2026

Reference-Based Distillation Detection in LLMs

Rajat Rawat, Sizhe Chen, Akshay Anand +3

Model distillation -- training on outputs from stronger third-party models -- is widely used to boost performance, but raises concerns about unfair advantages and policy violations…

cs.CR2025

Defending Against Prompt Injection with DataFilter

Yizhu Wang, Sizhe Chen, Raghad Alkhudair +2

When large language model (LLM) agents are increasingly deployed to automate tasks and interact with untrusted external data, prompt injection emerges as a significant security thr…

cs.CR2025

Defending Against Prompt Injection With a Few DefensiveTokens

Sizhe Chen, Yizhu Wang, Nicholas Carlini +2

When large language model (LLM) systems interact with external data to perform complex tasks, a new attack, namely prompt injection, becomes a significant threat. By injecting inst…

cs.CR2025

Meta-SecAlign: Training LLMs against Prompt Injection for Robust Agents

Sizhe Chen, Arman Zharmagambetov, David Wagner +1

Prompt injection attacks, where untrusted data contains an injected prompt to manipulate the system, have been listed as the top security threat to AI agents. By fine-tuning on sim…

cs.CR2024★ 17 cited

SecAlign: Defending Against Prompt Injection with Preference Optimization

Sizhe Chen, Arman Zharmagambetov, Saeed Mahloujifar +3

Large language models (LLMs) are becoming increasingly prevalent in modern software systems, interfacing between the user and the Internet to assist with tasks that require advance…

cs.CR2024★ 6 cited

StruQ: Defending Against Prompt Injection with Structured Queries

Sizhe Chen, Julien Piet, Chawin Sitawarin +1

Recent advances in Large Language Models (LLMs) enable exciting LLM-integrated applications, which perform text-based tasks by utilizing their advanced language understanding capab…

cs.CR2024

Jatmo: Prompt Injection Defense by Task-Specific Finetuning

Julien Piet, Maha Alrashed, Chawin Sitawarin +5

Large Language Models (LLMs) are attracting significant research attention due to their instruction-following abilities, allowing users and developers to leverage LLMs for a variet…

cs.AI2023★ 3 cited

Can LLMs Follow Simple Rules?

Norman Mu, Sarah Chen, Zifan Wang +6

As Large Language Models (LLMs) are deployed with increasing real-world responsibilities, it is important to be able to specify and constrain the behavior of these systems in a rel…

cs.LG2021

Subspace Adversarial Training

Tao Li, Yingwen Wu, Sizhe Chen +2

Single-step adversarial training (AT) has received wide attention as it proved to be both efficient and robust. However, a serious problem of catastrophic overfitting exists, i.e.,…

cs.LG2021

Measuring the Transferability of Attacks by the Norm

Sizhe Chen, Qinghua Tao, Zhixing Ye +1

Deep neural networks could be fooled by adversarial examples with trivial differences to original samples. To keep the difference imperceptible in human eyes, researchers bound the…

cs.CV2020★ 1 cited

Relevance Attack on Detectors

Sizhe Chen, Fan He, Xiaolin Huang +1

This paper focuses on high-transferable adversarial attacks on detectors, which are hard to attack in a black-box manner, because of their multiple-output characteristics and the d…