John Carreyrou is a French-American investigative journalist and author best known for exposing the Theranos fraud, one of the biggest corporate scandals in Silicon Valley history. A two-time Pulitzer Prize winner, he spent two decades at The Wall Street Journal before joining The New York Times in 2023 as an investigative reporter. His bestselling book, Bad Blood: Secrets and Lies in a Silicon Valley Startup, won the 2018 Financial Times and McKinsey Business Book of the Year Award and inspired multiple adaptations, including the Emmy-winning miniseries The Dropout. Today, Carreyrou is widely regarded as one of the leading investigative journalists covering corporate fraud and Silicon Valley.