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Listening devices of the East German security services A microphone disguised as a power outlet plate. 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.
A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary or property damage, as well as against intruders. Examples include personal systems, neighborhood security alerts, car alarms, and prison alarms.
In some cases CCTV cameras have become a target of attacks themselves. [31] A 2009 systematic review by researchers from Northeastern University and the University of Cambridge used meta-analytic techniques to pool the average effect of CCTV on crime across 41 different studies. [32]
The vast majority of computer surveillance involves the monitoring of data and traffic on the Internet. [9] In the United States for example, under the Communications Assistance For Law Enforcement Act, all phone calls and broadband Internet traffic (emails, web traffic, instant messaging, etc.) are required to be available for unimpeded real-time monitoring by federal law enforcement agencies.
Introduced in 2009, cardioid condenser microphone which operates on power supplied by the USB on Personal computers. ECM-58: Introduced in 2010, a hand-held dynamic microphone. Discontinued. ECM84 Kit: Introduced in 2013, a small diaphragm stereo electret condenser microphone kit. [14] MP-1073: Introduced in 2013, a Class-A microphone ...
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