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Aishan Liu

34 accepted papers

2026

AGENTSAFE: Benchmarking the Safety of Embodied Agents on Hazardous Instructions

CVPR 2026

The integration of vision-language models (VLMs) is driving a new generation of embodied agents capable of operating in human-centered environments. However, as deployment expands, these systems face growing safety risks, particularly when executing hazardous instructions. Current safety evaluation

Cited by 29SourceScholar
2026

Activation Manipulation Attack: Penetrating and Harmful Jailbreak Attack Against Large Vision-Language Models

AAAI 2026technical

Recently, Large Vision-Language Models (LVLMs) have been demonstrated to be vulnerable to jailbreak attacks, highlighting the urgent need for further research to comprehensively identify and mitigate these threats. Unfortunately, existing jailbreak studies primarily focus on coarse-grained input man

Cited by 0SourcePDFScholar
2026

Adversarial Generation and Collaborative Evolution of Safety-Critical Scenarios for Autonomous Vehicles

AAAI 2026technical

The generation of safety-critical scenarios in simulation has become increasingly crucial for safety evaluation in autonomous vehicles (AV) prior to road deployment in society. However, current approaches largely rely on predefined threat patterns or rule-based strategies, which limit their ability

Cited by 0SourcePDFScholar
2026

CMedBench: A Comprehensive Benchmark for Efficient Medical Large Language Models

AAAI 2026technical

Large Language Models (LLMs) hold significant potential for enhancing healthcare applications, yet their deployment is hindered by high computational and memory demands. Model compression techniques offer solutions to reduce these demands, but their impact on medical LLMs remains underexplored. In t

Cited by 0SourcePDFScholar
2026

Code2Bench: Scaling Source and Rigor for Dynamic Benchmark Construction

ICLR 2026poster

The evaluation of code-generating Large Language Models (LLMs) is fundamentally constrained by two intertwined challenges: a reliance on static, easily contaminated problem sources and the use of superficial, low-rigor testing. This paper introduces a new benchmark construction philosophy, Dual Scal…

Cited by 0SourcecodeScholar
2026

CodeChemist: Test-Time Scaling for Low-Resource Code Generation via Functional Knowledge Transfer

ICML 2026poster

Code Large Language Models (CodeLLMs) have been widely adopted for Natural Language to Programming Language code generation, powering applications with large user bases. Their performance, however, varies sharply across programming languages (PLs) and is particularly suboptimal for low-resource PLs …

Cited by 0SourceScholar
2026

SRD: Reinforcement-Learned Semantic Perturbation for Backdoor Defense in VLMs

AAAI 2026technical

Visual language models (VLMs) have made significant progress in image captioning tasks, yet recent studies have found they are vulnerable to backdoor attacks. Attackers can inject undetectable perturbations into the data during inference, triggering abnormal behavior and generating malicious caption

Cited by 0SourcePDFScholar
2025

BadRobot: Jailbreaking Embodied LLM Agents in the Physical World

ICLR 2025poster

Embodied AI represents systems where AI is integrated into physical entities. Multimodal Large Language Model (LLM), which exhibits powerful language understanding abilities, has been extensively employed in embodied AI by facilitating sophisticated task planning. However, a critical safety issue re…

Cited by 0SourcePDFScholar
2025

CopyrightShield: Enhancing Diffusion Model Security Against Copyright Infringement Attacks

ICCV 2025poster

Diffusion models have attracted significant attention due to its exceptional data generation capabilities in fields such as image synthesis. However, recent studies have shown that diffusion models are vulnerable to copyright infringement attacks, where attackers inject strategically modified non-in…

Cited by 0SourcePDFScholar
2025

Detoxifying Large Language Models via Autoregressive Reward Guided Representation Editing

NeurIPS 2025poster

Large Language Models (LLMs) have demonstrated impressive performance across various tasks, yet they remain vulnerable to generating toxic content, necessitating detoxification strategies to ensure safe and responsible deployment. Test-time detoxification methods, which typically introduce static or…

Cited by 0SourceScholar
2025

ELBA-Bench: An Efficient Learning Backdoor Attacks Benchmark for Large Language Models

ACL 2025long

Generative large language models are crucial in natural language processing, but they are vulnerable to backdoor attacks, where subtle triggers compromise their behavior. Although backdoor attacks against LLMs are constantly emerging, existing benchmarks remain limited in terms of sufficient coverag…

2025

Exploring Semantic-constrained Adversarial Example with Instruction Uncertainty Reduction

NeurIPS 2025poster

Recently, semantically constrained adversarial examples (SemanticAE), which are directly generated from natural language instructions, have become a promising avenue for future research due to their flexible attacking forms, but have not been thoroughly explored yet. To generate SemanticAEs, current…

Cited by 0SourceScholar
2025

ICLShield: Exploring and Mitigating In-Context Learning Backdoor Attacks

ICML 2025poster

In-context learning (ICL) has demonstrated remarkable success in large language models (LLMs) due to its adaptability and parameter-free nature. However, it also introduces a critical vulnerability to backdoor attacks, where adversaries can manipulate LLM behaviors by simply poisoning a few ICL demo…

Cited by 0SourcePDFScholar
2025

Lie Detector: Unified Backdoor Detection via Cross-Examination Framework

NeurIPS 2025poster

Institutions with limited data and computing resources often outsource model training to third-party providers in a semi-honest setting, assuming adherence to prescribed training protocols with pre-defined learning paradigm (e.g., supervised or semi-supervised learning). However, this practice can i…

Cited by 0SourceScholar
2025

Reasoning-Augmented Conversation for Multi-Turn Jailbreak Attacks on Large Language Models

EMNLP 2025

Multi-turn jailbreak attacks simulate real-world human interactions by engaging large language models (LLMs) in iterative dialogues, exposing critical safety vulnerabilities. However, existing methods often struggle to balance semantic coherence with attack effectiveness, resulting in either benign

2025

Revisiting Backdoor Attacks against Large Vision-Language Models from Domain Shift

CVPR 2025poster

Instruction tuning enhances large vision-language models (LVLMs) but increases their vulnerability to backdoor attacks due to their open design. Unlike prior studies in static settings, this paper explores backdoor attacks in LVLM instruction tuning across mismatched training and testing domains. We…

2025

T2V-OptJail: Discrete Prompt Optimization for Text-to-Video Jailbreak Attacks

NeurIPS 2025poster

In recent years, fueled by the rapid advancement of diffusion models, text-to-video (T2V) generation models have achieved remarkable progress, with notable examples including Pika, Luma, Kling, and Open-Sora. Although these models exhibit impressive generative capabilities, they also expose signific…

Cited by 0SourceScholar
2024

BadCLIP: Dual-Embedding Guided Backdoor Attack on Multimodal Contrastive Learning

CVPR 2024highlight

While existing backdoor attacks have successfully infected multimodal contrastive learning models such as CLIP they can be easily countered by specialized backdoor defenses for MCL models. This paper reveals the threats in this practical scenario and introduces the BadCLIP attack which is resistant…

2024

Byzantine Robust Cooperative Multi-Agent Reinforcement Learning as a Bayesian Game

ICLR 2024poster

In this study, we explore the robustness of cooperative multi-agent reinforcement learning (c-MARL) against Byzantine failures, where any agent can enact arbitrary, worst-case actions due to malfunction or adversarial attack. To address the uncertainty that any agent can be adversarial, we propose a…

2024

LLMCBench: Benchmarking Large Language Model Compression for Efficient Deployment

NeurIPS 2024spotlight

Although large language models (LLMs) have demonstrated their strong intelligence ability, the high demand for computation and storage hinders their practical application. To this end, many model compression techniques are proposed to increase the efficiency of LLMs. However, current researches only…

2024

Poisoned Forgery Face: Towards Backdoor Attacks on Face Forgery Detection

ICLR 2024spotlight

The proliferation of face forgery techniques has raised significant concerns within society, thereby motivating the development of face forgery detection methods. These methods aim to distinguish forged faces from genuine ones and have proven effective in practical applications. However, this paper…

2023

Exploring the Relationship Between Architectural Design and Adversarially Robust Generalization

CVPR 2023poster

Adversarial training has been demonstrated to be one of the most effective remedies for defending adversarial examples, yet it often suffers from the huge robustness generalization gap on unseen testing adversaries, deemed as the adversarially robust generalization problem. Despite the preliminary u…

Cited by 40SourcePDFScholar
2023

FAIRER: Fairness as Decision Rationale Alignment

ICML 2023poster

Deep neural networks (DNNs) have made significant progress, but often suffer from fairness issues, as deep models typically show distinct accuracy differences among certain subgroups (e.g., males and females). Existing research addresses this critical issue by employing fairness-aware loss functions…

Cited by 24SourcePDFScholar
2023

Improving Robust Fariness via Balance Adversarial Training

AAAI 2023technical

Adversarial training (AT) methods are effective against adversarial attacks, yet they introduce severe disparity of accuracy and robustness between different classes, known as the robust fairness problem. Previously proposed Fair Robust Learning (FRL) adaptively reweights different classes to improv…

2023

Towards Benchmarking and Assessing Visual Naturalness of Physical World Adversarial Attacks

CVPR 2023poster

Physical world adversarial attack is a highly practical and threatening attack, which fools real world deep learning systems by generating conspicuous and maliciously crafted real world artifacts. In physical world attacks, evaluating naturalness is highly emphasized since human can easily detect an…

2022

BiBERT: Accurate Fully Binarized BERT

ICLR 2022poster

The large pre-trained BERT has achieved remarkable performance on Natural Language Processing (NLP) tasks but is also computation and memory expensive. As one of the powerful compression approaches, binarization extremely reduces the computation and memory consumption by utilizing 1-bit parameters a…

2022

Defensive Patches for Robust Recognition in the Physical World

CVPR 2022poster

To operate in real-world high-stakes environments, deep learning systems have to endure noises that have been continuously thwarting their robustness. Data-end defense, which improves robustness by operations on input data instead of modifying models, has attracted intensive attention due to its hig…

Cited by 37PDFcodeScholar
2022

Exploring Endogenous Shift for Cross-Domain Detection: A Large-Scale Benchmark and Perturbation Suppression Network

CVPR 2022poster

Existing cross-domain detection methods mostly study the domain shifts where differences between domains are often caused by external environment and perceivable for humans. However, in real-world scenarios (e.g., MRI medical diagnosis, X-ray security inspection), there still exists another type of…

Cited by 39PDFcodeScholar
2021

Dual Attention Suppression Attack: Generate Adversarial Camouflage in Physical World

CVPR 2021poster

Deep learning models are vulnerable to adversarial examples. As a more threatening type for practical deep learning systems, physical adversarial examples have received extensive research attention in recent years. However, without exploiting the intrinsic characteristics such as model-agnostic and…

Cited by 255PDFcodeScholar
2020

Bias-based Universal Adversarial Patch Attack for Automatic Check-out

ECCV 2020poster

Adversarial examples are inputs with imperceptible perturbations that easily misleading deep neural networks (DNNs). Recently, adversarial patch, with noise confined to a small and localized patch, has emerged for its easy feasibility in real-world scenarios. However, existing strategies failed to g…

2020

Few-shot Visual Learning with Contextual Memory and Fine-grained Calibration

IJCAI 2020poster

Few-shot learning aims to learn a model that can be readily adapted to new unseen classes (concepts) by accessing one or few examples. Despite the successful progress, most of the few-shot learning approaches, concentrating on either global or local characteristics of examples, still suffer from wea…

Cited by 0SourcePDFScholar
2020

Spatiotemporal Attacks for Embodied Agents

ECCV 2020poster

Adversarial attacks are valuable for providing insights into the blind-spots of deep learning models and help improve their robustness. Existing work on adversarial attacks have mainly focused on static scenes; however, it remains unclear whether such attacks are effective against embodied agents, w…

2020

Transductive Relation-Propagation Network for Few-shot Learning

IJCAI 2020poster

Few-shot learning, aiming to learn novel concepts from few labeled examples, is an interesting and very challenging problem with many practical advantages. To accomplish this task, one should concentrate on revealing the accurate relations of the support-query pairs. We propose a transductive relati…

Cited by 0SourcePDFScholar