Stealing Black-Box Functionality Using The Deep Neural Tree Architecture

Daniel Teitelman; Itay Naeh; Shie Mannor

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arXiv · 2002.09864

Stealing Black-Box Functionality Using The Deep Neural Tree Architecture

Daniel Teitelman·Itay Naeh·Shie Mannor

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Abstract

This paper makes a substantial step towards cloning the functionality of black-box models by introducing a Machine learning (ML) architecture named Deep Neural Trees (DNTs). This new architecture can learn to separate different tasks of the black-box model, and clone its task-specific behavior. We propose to train the DNT using an active learning algorithm to obtain faster and more sample-efficient training. In contrast to prior work, we study a complex "victim" black-box model based solely on input-output interactions, while at the same time the attacker and the victim model may have completely different internal architectures. The attacker is a ML based algorithm whereas the victim is a generally unknown module, such as a multi-purpose digital chip, complex analog circuit, mechanical system, software logic or a hybrid of these. The trained DNT module not only can function as the attacked module, but also provides some level of explainability to the cloned model due to the tree-like nature of the proposed architecture.

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Daniel Teitelman, Itay Naeh, Shie Mannor. 2020-02-23. Stealing Black-Box Functionality Using The Deep Neural Tree Architecture. https://arxiv.org/abs/2002.09864

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