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Countersurveillance refers to measures that are usually undertaken by the public to prevent surveillance, [1] including covert surveillance.Countersurveillance may include electronic methods such as technical surveillance counter-measures, which is the process of detecting surveillance devices.
Many additional types and techniques of covert interrogation and surveillance exist, and covert interrogation can occur for other various reasons, and by other types of actors. The term covert interrogation also refers to interrogation techniques that may be overt in manner, but are hidden [ 2 ] from public, media, governmental, and other types ...
A covert listening device, more commonly known as a bug or a wire, is usually a combination of a miniature radio transmitter with a microphone. The use of bugs, called bugging, or wiretapping is a common technique in surveillance , espionage and police investigations.
As the name suggests, human intelligence is mostly collected by people and is commonly provided via espionage or some other form of covert surveillance. However, there are also overt methods of collection, such as via interrogation of subjects or simply through interviews.
A covert operation or undercover operation is a military or ... in counter-terrorism techniques. ... Jewels"—detailing illegal domestic surveillance, ...
Wiretapping, also known as wire tapping or telephone tapping, is the monitoring of telephone and Internet-based conversations by a third party, often by covert means.The wire tap received its name because, historically, the monitoring connection was an actual electrical tap on an analog telephone or telegraph line.