Sex for secrets. In an age dominated by digital surveillance, human desire remains a vulnerability. Foreign intelligence agencies are still using intimacy as a tool for gathering information. Is there a way to protect national security secrets from sexpionage? If trained officials with security clearances can be compromised in this way, how safe are our secrets? USA TODAY World Affairs Correspondent Kim Hjelmgaard joins The Excerpt for a look at the world of spies and honey traps. 

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