Visible to the public Securing Safety-Critical Machine Learning AlgorithmsConflict Detection Enabled

Project Details

Lead PI

Performance Period

Nov 29, 2021

Institution(s)

Carnegie Mellon University

Sponsor(s)

National Security Agency

Ranked 47 out of 118 Group Projects in this group.
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Machine-learning algorithms, especially classifiers, are becoming prevalent in safety and security-critical applications. The susceptibility of some types of classifiers to being evaded by adversarial input data has been explored in domains such as spam filtering, but with the rapid growth in adoption of machine learning in multiple application domains amplifies the extent and severity of this vulnerability landscape. We propose to (1) develop predictive metrics that characterize the degree to which a neural-network-based image classifier used in domains such as face recognition (say, for surveillance and authentication) can be evaded through attacks that are both practically realizable and inconspicuous, and (2) develop methods that make these classifiers, and the applications that incorporate them, robust to such interference. We will examine how to manipulate images to fool classifiers in various ways, and how to do so in a way that escapes the suspicion of even human onlookers. Armed with this understanding of the weaknesses of popular classifiers and their modes of use, we will develop explanations of model behavior to help identify the presence of a likely attack; and generalize these explanations to harden models against future attacks.

Lujo Bauer is an Associate Professor in the Electrical and Computer Engineering Department and in the Institute for Software Research at Carnegie Mellon University. He received his B.S. in Computer Science from Yale University in 1997 and his Ph.D., also in Computer Science, from Princeton University in 2003.

Dr. Bauer's research interests span many areas of computer security and privacy, and include building usable access-control systems with sound theoretical underpinnings, developing languages and systems for run-time enforcement of security policies on programs, and generally narrowing the gap between a formal model and a practical, usable system. His recent work focuses on developing tools and guidance to help users stay safer online and in examining how advances in machine learning can lead to a more secure future.

Dr. Bauer served as the program chair for the flagship computer security conferences of the IEEE (S&P 2015) and the Internet Society (NDSS 2014) and is an associate editor of ACM Transactions on Information and System Security.