Stealing Machine Learning Models via Prediction APIs

An academic paper that made me laugh! From the summary: "...we show simple, efficient attacks that extract target ML models with near-perfect fidelity for popular model classes including logistic regression, neural networks, and decision trees. We demonstrate these attacks against the online services of BigML and Amazon Machine Learning." A great response by BigML indicates that it doesn't charge for predictions and that this paper "shows how charging for predictions is a poor business strategy".


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