1. Tyco Integrated Security
171 N Addison Ave, Elmhurst, IL 60126
Coordinate: 41.90242,-87.94151
Phone: (630) 530-0062
2. Infosec Chicago
Coordinate: icon:https://i1.ypcdn.com/ypu/images/icons/map-pin.png|41.918594,-87.96048
Phone: Phone: (630) 412-1842