Countersurveillance

Countersurveillance refers to measures undertaken to prevent surveillance, including covert surveillance. Countersurveillance may include electronic methods such as bug sweeping &mdash; the process of detecting surveillance devices &mdash; including covert listening devices and visual surveillance devices. More often than not, countersurveillance will employ a set of actions (countermeasures) that, when followed, reduce the risk of surveillance.