Sleeper agent
Meaning
A secret agent who is planted in a target country or organization and remains inactive for a long period before being activated for a specific mission.
Origin
While the concept of an agent lying dormant, awaiting a signal, is as ancient as the art of espionage itself, the term "sleeper agent" truly solidified its place in the public imagination and intelligence lexicon during the intense ideological battlegrounds of the Cold War. As nations like the Soviet Union and the United States sought to infiltrate each other's societies, they recognized that the most potent spies weren't just those deployed for immediate tasks, but individuals who could live ordinary, unscrutinized lives for years, even decades, becoming fully integrated before being activated. This long-term investment in human intelligence, involving meticulous planning and patient waiting, gave birth to the chillingly patient figure of the sleeper agent, poised to awaken at the silent sound of a command.
Examples
- The intelligence agency suspected there might be a sleeper agent embedded deep within the government ranks.
- She lived an ordinary life for twenty years, building a solid cover before her handlers finally activated her as a sleeper agent.