Renée DiResta is a social media researcher who studies adversarial abuse online, ranging from state actors running influence operations, to scammers, spammers and issues related to child safety. In 2018 and 2019, at the behest of the Senate Select Committee on Intelligence, she led external teams investigating the Russia-linked multi-year effort to manipulate American society and elections. Her new book, "Invisible Rulers: The People Who Turn Lies Into Reality," examines modern propaganda and influence.