## WaNet - Imperceptible Warping-based Backdoor Attack

### Tuan Anh Nguyen · Anh T Tran

##### Virtual

Keywords: [ wanet ] [ image warping ] [ backdoor attack ]

[ Abstract ]
[
[ Paper ]
Mon 3 May 1 a.m. PDT — 3 a.m. PDT

Abstract:

With the thriving of deep learning and the widespread practice of using pre-trained networks, backdoor attacks have become an increasing security threat drawing many research interests in recent years. A third-party model can be poisoned in training to work well in normal conditions but behave maliciously when a trigger pattern appears. However, the existing backdoor attacks are all built on noise perturbation triggers, making them noticeable to humans. In this paper, we instead propose using warping-based triggers. The proposed backdoor outperforms the previous methods in a human inspection test by a wide margin, proving its stealthiness. To make such models undetectable by machine defenders, we propose a novel training mode, called the noise mode. The trained networks successfully attack and bypass the state-ofthe art defense methods on standard classification datasets, including MNIST, CIFAR-10, GTSRB, and CelebA. Behavior analyses show that our backdoors are transparent to network inspection, further proving this novel attack mechanism's efficiency.

Chat is not available.