Private security is the practice of protecting people and property from threats such as theft, vandalism, and violence. Private security guards are hired by businesses and organizations to protect their property and personnel from harm. Private security guards may be armed or unarmed, and they may handle a variety of tasks, such as patrolling a property, operating security equipment, or responding to alarms. Private security guards are typically hired by businesses and organizations to provide additional security during special events, or to supplement existing security measures.