New technology is making it possible for people to make realistic videos of people appearing to say things they never actually said. The videos are known as “deep fakes.” The name comes from the process of deep learning, a form of artificial intelligence, or AI. They can be created with computer programs available for sale or on the internet. The technology uses face mapping and AI to produce false videos that look almost real. Lawmakers, intelligence officials and media experts have expressed concern about deep fakes. They warn the false videos could be used to threaten America’s national security or interfere in elections.