Ms. Choi is a seasoned prosecutor with nearly a decade of experience within the department, and most recently served as Senior Counsel to the Deputy Attorney General.

Prior to her service as Senior Counsel to Deputy Attorney General Lisa O. Monaco, Director Choi began her career at the department as an Assistant U.S. Attorney for the Southern District of New York, where she served as the office’s Cybercrime Coordinator and investigated and prosecuted cyber, complex fraud and money laundering crimes, with a particular focus on network intrusions, digital currency, the dark web and national security investigations. She served as lead prosecutor in a variety of cases, including the investigation of a transnational organization responsible for the hacking of J.P. Morgan Chase and a dozen other financial companies; the operation of Coin.mx, an unlicensed virtual currency exchange; and the only U.S. prosecution brought in connection with the “Panama Papers.” In addition, she successfully argued the appeal before the Second Circuit in the case against Ross Ulbricht, the founder and chief administrator of the Silk Road, the first darknet marketplace. Earlier in her career, she served as a law clerk to the Honorable Naomi Reice Buchwald of the U.S. District Court for the Southern District of New York, and the Honorable Reena Raggi of the U.S. Court of Appeals for the Second Circuit. She is a graduate of Harvard College and Harvard Law School.