1. A method of protecting data items in an organizational computer network, comprising: defining multiple information profiles for classifying the data item; defining rules for protecting the data item belonging to a specific information profile; classifying the data item according to the defined information profiles; applying a protection method to the data item responsive to said classification and the defined rules; automatically updating the classification of the data item responsive to a change in the content or location of the data item; and automatically transforming the applied protection method, throughout the lifecycle of the data item, responsive to a change in classification or location of the data item, according to said defined rules.