1. An image forming device comprising: one or more processors; and a memory communicatively coupled to the one or more processors, the memory storing instructions which, when processed by the one or more processors, causes: authenticating user data received by the image forming device, wherein the user data corresponds to a particular user; determining electronic document data to be processed, retrieving, from a plurality of user preference data, particular user preference data that is specific to the user data and which specifies one or more types of confidential information and one or more actions to be performed on each type of confidential information, processing the electronic document data to identify, in the electronic document data, confidential information of one or more types that match the one or more types of confidential information specified by the particular user preference data that is specific to the user data and which specifies the one or more types of confidential information and the one or more actions to be performed on each type of confidential information, and automatically processing the electronic document data based upon the particular user preference data that is specific to the user data and which specifies the one or more types of confidential information and the one or more actions to be performed on each type of confidential information and generating processed electronic document data by removing, from the electronic document data, the confidential information having one or more types that match the one or more types of confidential information specified by the particular user preference data and additional information adjacent to the confidential information.
22. The image forming device recited in claim 1 , wherein the one or more actions include at least that each type of confidential information is to be removed from the electronic document data.