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cloak-and-dagger |
involving espionage, esp. viewed as being overly dramatic. |
counterespionage |
espionage and other measures designed to frustrate enemy espionage. |
counterintelligence |
a program of a government or other organization to frustrate enemy espionage, intelligence gathering, and subversion. |
Espionage Act |
a U.S. law passed by President Woodrow Wilson in 1917, shortly after the U.S. entered World War I. The Espionage Act made it a crime to convey information with the intent to interfere with the operation of the U.S. military or its recruitment of troops, to disclose information relating to national defense, or to promote the success of the country's enemies. |
microdot |
a photographic copy of something, such as written material or a document, that is reduced to an extremely tiny size, as for the purpose of espionage. |
Schenck v. United States |
the U.S. Supreme Court case decided in 1919 that upheld the criminal conviction of the defendant for violation of the Espionage Act of 1917. In the majority opinion, Oliver Wendell Holmes, Jr. argued that speech aimed to undermine military or naval operations during wartime presented a "clear and present danger" to the security of the country. |
secret agent |
a person who performs acts of espionage and other undercover operations, esp. for a government. |
secret service |
a government service that conducts espionage and other undercover operations so as to gain knowledge of, and often to frustrate the activities of, hostile individuals, groups, and governments. [1/2 definitions] |
Sedition Act of 1918 |
a short-lived amendment to the U.S. Espionage Act of 1917 that listed offenses deemed criminal when the country is at war, including to willfully obstruct military recruitment and to print, write, or publish any disloyal or abusive language about the form of the U.S. federal government. |
spook |
a spy or other person involved in espionage. [1/4 definitions] |
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