security system

security system

noun
1. (computing) a system that enforces boundaries between computer networks 
2. an electrical device that sets off an alarm when someone tries to break in 
WordNet® 3.0, © 2006 by Princeton University.
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Encyclopedia Britannica
Encyclopedia

security system

any of various means or devices designed to guard persons and property against a broad range of hazards, including crime, fire, accidents, espionage, sabotage, subversion, and attack

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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