Snowden smuggled out data on thumb drive, officials say - latimes

WASHINGTON — Former National Security Agency contract employee Edward Snowden used a computer thumb drive, a portable data storage device that is supposedly barred inside the spying agency, to smuggle highly classified documents out of an NSA facility in Hawaii, according to U.S. officials. - Snowden smuggled out data on thumb drive, officials say
Edward Snowden shows evolution of smuggling secrets