1. A system including an image processing device and an image forming device, where the image processing device outputs image data to the image forming device and the image forming device forms an image based on the image data, the system comprising: at least one communication unit configured to provide information including a type of security set at either the image processing device or the image forming device from either the image processing device or the image forming device, wherein whichever of the image processing device or the image forming device does not provide the information receives the information; and at least one selection unit configured to select a type of security to be set according to the information at whichever of the image processing device or the image forming device receives the information.