An image processing device comprises a storage unit which has multiple storage regions and stores document data within the storage regions, a security settings unit which performs settings relating to security as to the storage regions, and a specifying unit for specifying document data to be sent externally from the document data stored in storage unit, and determines whether the storage region in which the specified document data specified by the specifying unit is stored is a storage region in which settings relating to security by the security settings unit is set, and decides based on results of such determining whether to permit or prohibit sending of document data.