Hany Farid is a professor of electrical engineering and computer sciences at the University of California, Berkeley. He's been a leading voice on digital forensics for over two decades—pioneering ways to identify if an image, audio or video has been digitally altered. Since the rise of social media, Farid has kept busy helping news organizations, government agencies and law enforcement determine what is real and what is fake online. Farid sits down with Oz to talk about his initial interest in digital forensics, the effects of misinformation on society, and whether he wants an AI likeness of himself to live on after he dies.