Since 1990 offenders are more likely to be naturalized citizens, and to have foreign connections. Their espionage is more likely to be motivated by divided loya

The Defense Personnel Security Research Center monitors and analyzes espionage by Americans. This is the third in a series of technical reports on espionage bas

Analyses of 150 cases of espionage against the United States by American citizens between 1947 and 2001. Provides detailed data on the demographic and employmen

The Oxford Handbook of National Security Intelligence is a state-of-the-art work on intelligence and national security. Edited by Loch Johnson, one of the world

As experienced by the United States, competition has played out in three distinct types of threat activity: sabotage (the destruction of capabilities), espionag