The improving power of artificial intelligence(AI)is perhaps most evident in the increasingly realistic manipulation of video and other digital media[1],with the latest generation of AI-altered videos,known as deepfakes[2],prompting a primarily Facebooksponsored competition to identify them as such.Launched in December 2019,the Deepfake Detection Challenge(DFDC)closed to entries in March 2020[3].The results are now in Refs.[3–5].While somewhat unimpressive,underscoring the difficulty of addressing this growing challenge,they importantly provide a benchmark for automated detection strategies and suggest productive directions for further research.
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