The Security Industry Association (SIA) is a full-service, international trade association. The security industry was a $350 billion industry in 2013. It is a broad one that offers protective measures to communities, organizations, and people to alleviate risk, danger, doubt, anxiety, or fear. Security is the condition of being protected against danger or loss.

The security industry is concerned with safety, continuity, and reliability. Safety means the condition of being safe and free from danger, risk, or injury. Safety devices include those designed to prevent accidents, such as a lock on a firearm preventing accidental firing. Continuity means an uninterrupted succession or flow. Systems that provide continuity include disaster recovery systems and backups, for example, generators. Reliability refers to the probability that a system will ...

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