Espionage (colloquially, spying) is the obtaining of secret or confidential informations without the permission of the holder of the information. Spies help agencies uncover secret information. Any individual or spy ring (a cooperating group of spies), in the service of a government, company or independent operation, can commit espionage. The practice is clandestine, as it is by definition unwelcome and in many cases illegal and punishable by law. Espionage is a subset of "intelligence" gathering, which includes espionage as well as information gathering from public sources.

Espionage is often part of an institutional effort by a government or commercial concern. However, the term tends to associate with state spying on potential or actual enemies for military purposes. Spying involving corporations is known as industrial espionage.

One of the most effective ways to gather data and information about the enemy (or potential enemy) is by infiltrating the enemy's ranks. This is the job of the spy (espionage agent). Spies can return all sorts of information concerning the size and strength of enemy forces. They can also find dissidents within the enemy's forces and influence them to defect. In times of crisis, spies can also oblige to steal technology and sabotage the enemy in various ways. Counterintelligence is the practice of various means of thwarting enemy espionage and intelligence-gathering. Almost all nations have strict laws concerning espionage and the penalty for being caught is often severe. However, the benefits through espionage are often great enough that most governments and many large corporations make use of it to varying degrees.

Further information on clandestine human intelligence and human intelligence information collection techniques is available, including discussions of operational techniques, asset recruiting, and the tradecraft used to collect this information.

Today, espionage agencies target the illegal drug trade and terrorists as well as state actors. Since 2008, the United States has charged at least 57 defendants for attempting to spy for China.

Different intelligence services value certain intelligence collection techniques over others. The former Soviet Union, for example, preferred human sources over research in open sources, while the United States has tended to emphasize technological methods such as SIGINT and IMINT. Both Soviet political (KGB) and military intelligence (GRU) officers were judged by the number of agents they recruited.

This page was last edited on 21 March 2018, at 07:32.
Reference: under CC BY-SA license.

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