A video camera used to protect a building from intruders and to detect crime and other issues.

A hardware system that prevents unauthorised intrusion into a premises, and reports such attempts. / (computing) A similar software system that prevents unauthorised access.

The probability that an individual will keep his/her job.

A facility or part of a facility with minimal restrictions, designed to hold the least dangerous criminals of society.

a prison with more restrictions designed to hold the most dangerous criminals of society; supermax.

(US) The concerted national effort, principally by government, to keep the United States safe and resilient to terrorism and other hazards.

plural of security camera

plural of security service

A set of practices shared by a community whose members may engage in illegal or sensitive activities, in order to minimize the risk of these activities being subverted or sabotaged.

plural of security culture