Espionage has been recognized as of importance in military affairs since ancient times.
The oldest known classified document was a report made by a spy disguised as a See more

Today, spy agencies target the illegal drug trade and terrorists as well as state actors.
Intelligence services value certain intelligence … See more

Espionage agents are usually trained experts in a targeted field so they can differentiate mundane information from targets of value to their own organizational development. Correct identification of the target at its execution is the sole purpose of the espionage … See more

Although the news media may speak of "spy satellites" and the like, espionage is not a synonym for all intelligence-gathering disciplines. It is a specific form of human source intelligence ( See more

A spy is a person employed to seek out top secret information from a source. Within the United States Intelligence Community, "asset" is more common usage. A See more

Reportedly Canada is losing $12 billion and German companies are estimated to be losing about €50 billion ($87 billion) and 30,000 jobs to industrial espionage every year. See more

In espionage jargon, an "agent" is the person who does the spying. They may be a citizen of a country recruited by that country to spy on … See more