Binghui Wang

Random Walk Based Fake Account Detection in Online Social Networks

2017

Online social networks are known to be vulnerable to the so-called Sybil attack, in which an attacker maintains massive fake accounts (also called Sybils) and uses them to perform various malicious activities. Therefore, Sybil detection …

Perturbing Across the Feature Hierarchy to Improve Standard and Strict Blackbox Attack Transferability

2020 · arXiv (Cornell University)

We consider the blackbox transfer-based targeted adversarial attack threat model in the realm of deep neural network (DNN) image classifiers. Rather than focusing on crossing decision boundaries at the output layer of the source model, …

Leveraging Local Structure for Improving Model Explanations: An Information Propagation Approach

2024

Numerous explanation methods have been recently developed to interpret the decisions made by deep neural network (DNN) models. For image classifiers, these methods typically provide an attribution score to each pixel in the image to …