Private sector security jobs patrol the premises and monitor the activity at a private organization, such as a mall or large office building. Their primary responsibility is to protect customers, employees, and guests at the establishment. Job titles include security guards or security officers. The specific job duties of those who work private sector security jobs include patrolling the premises at regular intervals to watch for suspicious activity, assist people who need help, and remove trespassers. Your other responsibilities may include overseeing the entrance of people and vehicles to the grounds; securing all doors, windows, and exits at closing time; monitoring the surveillance cameras; responding to alarms to assess the situation; and creating and submitting daily surveillance reports.