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Wenjie Ruan

25 accepted papers

2026

Fragile by Design: On the Limits of Adversarial Defenses in Personalized DreamBooth Generation

AAAI 2026technical

Personalized AI applications such as DreamBooth enable the generation of customized content from user images, but also raise significant privacy concerns, particularly the risk of facial identity leakage. Recent defense mechanisms like Anti-DreamBooth attempt to mitigate this risk by injecting adver

Cited by 0SourcePDFScholar
2026

Jailbreaking Vision-Language Models via Dissonance-Guided Suffix Optimization and Image-Phrase Injection

CVPR 2026

The integration of vision and language in Vision-Language Models (VLMs), while enabling multimodal capabilities, inherently expands their attack surface. Among existing white-box jailbreak methods, suffix-optimization-based approaches often rely on gradient approximations over discrete token spaces,

Cited by 0SourcecodeScholar
2026

Logit-Margin Repulsion for Backdoor Defense

CVPR 2026

Backdoor attacks pose a significant threat to deep neural networks. Recent studies have shown that model compression, such as quantization and pruning, can be exploited by attackers to implant conditional backdoors. Such backdoors remain dormant in the original model but are activated after the mode

Cited by 0SourcecodeScholar
2026

Position: Generative Distributional Integrity against Backdoor Attacks

ICML 2026poster

Foundation models, such as Diffusion Models (DMs) and Large Language Models (LLMs), are now widely integrated into digital systems. This widespread use introduces a specific security risk: generative backdoors. Unlike traditional models where backdoors cause simple classification errors, generative …

Cited by 0SourceScholar
2025

A Black-Box Evaluation Framework for Semantic Robustness in Bird’s Eye View Detection

AAAI 2025technical

Camera-based Bird's Eye View (BEV) perception models receive increasing attention for their crucial role in autonomous driving, a domain where concerns about the robustness and reliability of deep learning have been raised. While only a few works have investigated the effects of randomly generated s…

2025

Adversarial Training for Probabilistic Robustness

ICCV 2025poster

Deep learning (DL) has shown transformative potential across industries, yet its sensitivity to adversarial examples (AEs) limits its reliability and broader deployment. Research on DL robustness has developed various techniques, with adversarial training (AT) established as a leading approach to co…

2025

FALCON: Fine-grained Activation Manipulation by Contrastive Orthogonal Unalignment for Large Language Model

NeurIPS 2025poster

Large language models have been widely applied, but can inadvertently encode sensitive or harmful information, raising significant safety concerns. Machine unlearning has emerged to alleviate this concern; however, existing training-time unlearning approaches, relying on coarse-grained loss combinat…

Cited by 0SourceScholar
2024

CROWD: Certified Robustness via Weight Distribution for Smoothed Classifiers against Backdoor Attack

EMNLP 2024finding

Language models are vulnerable to clandestinely modified data and manipulation by attackers. Despite considerable research dedicated to enhancing robustness against adversarial attacks, the realm of provable robustness for backdoor attacks remains relatively unexplored. In this paper, we initiate a…

2024

DeepGRE: Global Robustness Evaluation of Deep Neural Networks

ICASSP 2024accepted

Robustness measurements on deep neural networks (DNNs) have gained significant attention, especially in safety-critical applications. Numerous studies have been devoted to assessing the robustness of classifiers by averaging local robustness over a fixed set of data samples, such as a test set. Howe…

Cited by 0SourceScholar
2024

PRASS: Probabilistic Risk-averse Robust Learning with Stochastic Search

IJCAI 2024poster

Deep learning models, despite their remarkable success in various tasks, have been shown to be vulnerable to adversarial perturbations. Although robust learning techniques that consider adversarial risks against worst-case perturbations can effectively increase a model's robustness, they may not alw…

Cited by 1SourcePDFScholar
2024

Position: Building Guardrails for Large Language Models Requires Systematic Design

ICML 2024poster

As Large Language Models (LLMs) become more integrated into our daily lives, it is crucial to identify and mitigate their risks, especially when the risks can have profound impacts on human users and societies. Guardrails, which filter the inputs or outputs of LLMs, have emerged as a core safeguardi…

Cited by 3SourcePDFScholar
2024

ProTIP: Probabilistic Robustness Verification on Text-to-Image Diffusion Models against Stochastic Perturbation

ECCV 2024poster

"Text-to-Image (T2I) Diffusion Models (DMs) excel at creating high-quality images from text descriptions but, like many deep learning models, suffer from robustness issues. While there are attempts to evaluate the robustness of T2I DMs as a binary or worst-case problem, they cannot answer how robust…

2024

Representation-Based Robustness in Goal-Conditioned Reinforcement Learning

AAAI 2024technical

While Goal-Conditioned Reinforcement Learning (GCRL) has gained attention, its algorithmic robustness against adversarial perturbations remains unexplored. The attacks and robust representation training methods that are designed for traditional RL become less effective when applied to GCRL. To addre…

2024

Reward Certification for Policy Smoothed Reinforcement Learning

AAAI 2024technical

Reinforcement Learning (RL) has achieved remarkable success in safety-critical areas, but it can be weakened by adversarial attacks. Recent studies have introduced ``smoothed policies" to enhance its robustness. Yet, it is still challenging to establish a provable guarantee to certify the bound of i…

2024

TARP-VP: Towards Evaluation of Transferred Adversarial Robustness and Privacy on Label Mapping Visual Prompting Models

NeurIPS 2024poster

Adversarial robustness and privacy of deep learning (DL) models are two widely studied topics in AI security. Adversarial training (AT) is an effective approach to improve the robustness of DL models against adversarial attacks. However, while models with AT demonstrate enhanced robustness, they be…

Cited by 0SourcePDFScholar
2024

The Implicit Bias of Gradient Descent toward Collaboration between Layers: A Dynamic Analysis of Multilayer Perceptions

NeurIPS 2024poster

The implicit bias of gradient descent has long been considered the primary mechanism explaining the superior generalization of over-parameterized neural networks without overfitting, even when the training error is zero. However, the implicit bias toward adversarial robustness has rarely been consid…

Cited by 0SourcePDFScholar
2024

Towards Fairness-Aware Adversarial Learning

CVPR 2024poster

Although adversarial training (AT) has proven effective in enhancing the model's robustness the recently revealed issue of fairness in robustness has not been well addressed i.e. the robust accuracy varies significantly among different categories. In this paper instead of uniformly evaluating the mo…

2023

Certified Policy Smoothing for Cooperative Multi-Agent Reinforcement Learning

AAAI 2023technical

Cooperative multi-agent reinforcement learning (c-MARL) is widely applied in safety-critical scenarios, thus the analysis of robustness for c-MARL models is profoundly important. However, robustness certification for c-MARLs has not yet been explored in the community. In this paper, we propose a nov…

2023

RePreM: Representation Pre-training with Masked Model for Reinforcement Learning

AAAI 2023technical

Inspired by the recent success of sequence modeling in RL and the use of masked language model for pre-training, we propose a masked model for pre-training in RL, RePreM (Representation Pre-training with Masked Model), which trains the encoder combined with transformer blocks to predict the masked…

Cited by 4SourcePDFScholar
2023

Sora: Scalable Black-Box Reachability Analyser on Neural Networks

ICASSP 2023accepted

The vulnerability of deep neural networks (DNNs) to input perturbations has posed a significant challenge. Recent work on robustness verification of DNNs not only lacks scalability but also requires severe restrictions on the architecture (layers, activation functions, etc.). To address these limita…

Cited by 0SourceScholar
2023

TextVerifier: Robustness Verification for Textual Classifiers with Certifiable Guarantees

ACL 2023findings

When textual classifiers are deployed in safety-critical workflows, they must withstand the onslaught of AI-enabled model confusion caused by adversarial examples with minor alterations. In this paper, the main objective is to provide a formal verification framework, called TextVerifier, with certif…

2023

Towards Verifying the Geometric Robustness of Large-Scale Neural Networks

AAAI 2023technical

Deep neural networks (DNNs) are known to be vulnerable to adversarial geometric transformation. This paper aims to verify the robustness of large-scale DNNs against the combination of multiple geometric transformations with a provable guarantee. Given a set of transformations (e.g., rotation, scali…

2019

Gaze-based Intention Anticipation over Driving Manoeuvres in Semi-Autonomous Vehicles

IROS 2019poster

Anticipating a human collaborator's intention enables safe and efficient interaction between a human and an autonomous system. Specifically, in the context of semiautonomous driving, studies have revealed that correct and timely prediction of the driver's intention needs to be an essential part of A…

Cited by 41SourceScholar