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Security and Privacy in Three States of Information

In regard to computational context, information can be in either of three states at a time: in transit, in process, or in storage. When the security and privacy of information is of concern, each of these states should be addressed exclusively, i.e., network security, computer security, and database/cloud security, respectively. This chapter first introduces the three states of information and then addresses the security as well as privacy issues that relate to each state. It provides practical examples for each state discussed, introduces corresponding security and privacy algorithms for explaining the concepts, and facilitates their implementation whenever needed. Moreover, the security and privacy techniques pertaining to the three states of information are combined together to offer a more comprehensive and realistic consideration of everyday security practices.