1. Elizabeth Holmes - Theranos

Elizabeth Holmes is the founder of Theranos, a health technology company that claimed to revolutionize blood testing with just a few drops of blood. Holmes promoted the idea that their technology could perform numerous tests quickly and cheaply. However, investigations revealed that the technology did not work as promised, leading to significant legal troubles and criminal charges against her for fraud. Her story is a cautionary tale about the dangers of overpromising in innovation and the importance of integrity in health-related industries. Holmes's trial drew widespread attention to issues of ethics and accountability in entrepreneurship.