Protection of documents printed in paper is provided by processes for detection, immediately and clearly, of different types of falsification, adulteration, inclusion and omission. A network accessible system is capable of detecting several fraud aspects. A "Remote Expertise Center" or a remote service data center accessible from and to any location in which there is a connection to the network, such as through the Internet provides customized protection and automatic verification of document pages. Documents pages are generated by the Remote Expertise Center and transmitted to remote printers, bypassing user operational system, using a specific driver of each printer, avoiding any access to protected document before effective printing. Documents include multiple types of security features, such that in the event that any of them is surpassed, the document will remain protected by the other types of security protection. Security features may include, among others, background images, computer readable code containing the printed content, identification information readable only with a predetermined optical filter, a copy alert that changes appearance when the printed document is copied, and personalized items to identify individuals responsible for non authorized document disclosure or leakage.