Faketracer: Exposing Deepfakes with Training Data Contamination

We describe a proactive defense method to expose Deep-Fakes with training data contamination. Note that the existing methods usually focus on defending from general DeepFakes, which are synthesized by GAN using random noise. In contrast, our method is dedicated to defending from native Deep-Fakes, which is synthesized by auto-encoder that involves face swapping and encoding-decoding process that general DeepFakes do not have. Specifically, we design two types of traces namely sustainable traces and erasable traces, which are added on the faces to manipulate the training of DeepFake models. Consequently, the trained DeepFake model can synthesize faces with sustainable traces but no erasable traces. With the help of these two traces, we can expose DeepFakes proactively. Our method is compared with recent passive and proactive defense methods, which corroborates the efficacy of our method.