FMM-Attack: Flow-based Multi-modal Adversarial Attack on Video-based LLMs

Core Concepts

The FMM-Attack introduces a novel adversarial attack tailored for video-based LLMs, inducing garbled or incorrect responses with imperceptible perturbations.

Abstract

The content discusses the FMM-Attack, a new adversarial attack method for video-based large language models. It explores the vulnerability of video-based LLMs and presents insights into multi-modal robustness and safety-related feature alignment. The attack induces garbling in model outputs and prompts hallucinations. Extensive experiments demonstrate the effectiveness of the FMM-Attack in generating incorrect answers with imperceptible perturbations.

Introduction to Video-based Large Language Models (LLMs)

Recent advancements in multi-modal understanding.
Vulnerability of large multi-modal models to adversarial attacks.

Proposed FMM-Attack Methodology

Crafting flow-based multi-modal adversarial perturbations.
Utilizing two objective functions in video and LLM features.

Experimental Results and Analysis

Effectiveness of FMM-Attack in inducing incorrect responses.
Insights into cross-modal feature attacks and safety-related alignment.

Conclusion and Implications

Significance of the study for large multi-modal models.
Need for enhancing model robustness against attacks.

Stats

"Extensive experiments show that our attack can effectively induce video-based LLMs to generate either garbled nonsensical sequences or incorrect semantic sequences with imperceptible perturbations added on less than 20% video frames."

Quotes

"Our observations inspire a further understanding of multi-modal robustness and safety-related feature alignment."
"Surprisingly, we find that successful adversarial attacks on video-based large language models (LLMs) can result in the generation of either garbled nonsensical sequences or incorrect semantic sequences."

Key Insights Distilled From

FMM-Attack

by Jinmin Li,Ku... at arxiv.org 03-21-2024

https://arxiv.org/pdf/2403.13507.pdf

Deeper Inquiries

How can improving cross-modal feature alignment enhance the robustness of large multi-modal models?

Improving cross-modal feature alignment is crucial for enhancing the robustness of large multi-modal models. When different modalities, such as video and language, are aligned effectively, it ensures that the model can extract meaningful information from each modality and integrate them seamlessly. This alignment helps in creating a cohesive understanding of the input data across multiple modalities, leading to more accurate predictions and responses. By aligning features from different modalities properly, large multi-modal models can better capture complex relationships between visual and textual information, resulting in improved performance and generalization capabilities.

What are potential defense mechanisms to protect video-based LLMs from adversarial attacks?

There are several potential defense mechanisms that can be employed to protect video-based LLMs from adversarial attacks:

Adversarial Training: Incorporating adversarial training during model training can help improve robustness against adversarial attacks by exposing the model to perturbed examples.
Input Preprocessing: Applying input preprocessing techniques like noise injection or data augmentation can make it harder for attackers to craft effective adversarial perturbations.
Ensemble Methods: Using ensemble methods by combining multiple models with diverse architectures or training strategies can increase resilience against attacks.
Feature Alignment Regularization: Implementing regularization techniques that encourage proper alignment between features extracted from different modalities can enhance model robustness.
Model Interpretation Techniques: Leveraging model interpretation techniques like attention maps or saliency maps can help identify vulnerable areas within the model architecture that could be targeted by adversaries.

How does the concept of flow-based temporal masks contribute to effective adversarial attacks?

The concept of flow-based temporal masks plays a significant role in facilitating effective adversarial attacks on video-based LLMs:

Selective Frame Modification: Flow-based temporal masks allow for selective modification of frames based on motion cues captured through optical flow analysis. This enables attackers to focus on key frames with significant movement or changes, making their perturbations more impactful.
Temporal Sparsity Control: By incorporating sparsity constraints through flow-based masks, attackers ensure that only specific frames are modified while maintaining temporal coherence in videos. This controlled sparsity enhances attack effectiveness while minimizing perceptibility.
Enhanced Attack Potency: The use of flow-based temporal masks optimizes attack strategies by prioritizing frames essential for generating incorrect responses from video-based LLMs. This targeted approach increases the potency of adversarial attacks and amplifies their disruptive impact on model outputs.