Erratum Concerning the Obfuscated Gradients Attack on Stochastic Activation Pruning

Guneet S. Dhillon; Nicholas Carlini

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arXiv · 2010.00071

Erratum Concerning the Obfuscated Gradients Attack on Stochastic Activation Pruning

Guneet S. Dhillon·Nicholas Carlini

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Abstract

Stochastic Activation Pruning (SAP) (Dhillon et al., 2018) is a defense to adversarial examples that was attacked and found to be broken by the "Obfuscated Gradients" paper (Athalye et al., 2018). We discover a flaw in the re-implementation that artificially weakens SAP. When SAP is applied properly, the proposed attack is not effective. However, we show that a new use of the BPDA attack technique can still reduce the accuracy of SAP to 0.1%.

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Guneet S. Dhillon, Nicholas Carlini. 2020-09-30. Erratum Concerning the Obfuscated Gradients Attack on Stochastic Activation Pruning. https://arxiv.org/abs/2010.00071

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