The field of generative artificial intelligence (AI) is advancing at an astronomical pace. As a result, deepfakes – manipulated pieces of media using generative AI technology and designed to trick their viewers – are becoming more convincing, prevalent and problematic. Professor Siwei Lyu, based at University at Buffalo, The State University of New York in the US, is determined to halt the advance of deepfake media and ensure that generative AI is used for the good of society.