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Chapter 10: Test-Time Detection of Backdoor Triggers

Chapter 10: Test-Time Detection of Backdoor Triggers

pp. 246-255

Authors

, Pennsylvania State University, , University of Illinois, Urbana-Champaign, , Pennsylvania State University
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Extract

Previous chapters considered detection of backdoors before/during training and post-training. Here, our objective is to detect use of a backdoor trigger operationally, that is, at test time. Such detection may prevent potentially catastrophic decisions, as well as potentially catching culprits in the act of exploiting a learned backdoor mapping. We also refer to such detection as “in-flight.” A likelihood based backdoor trigger detector is developed and compared against other detectors.

Keywords

  • backdoor
  • backdoor trigger detection
  • test-time detector
  • in-flight detection
  • deep layer (embedded) features
  • likelihood based detector

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