Assistant U.S. Attorney General for the National Security Division Matt Olsen left a meeting with Congressional leadership on Feb. 28 in Washington. (Photo by Kevin Dietsch/Getty Images) DOJ establishes cybercrime enforcement unit as U.S. warnings mount over Chinese hacking Assistant Attorney General for National Security Matt Olsen said the center will speed up disruption campaigns and prosecutions. Jun 20, 2023 By AJ Vicens