Providing security for the content that gets exchanged between physically and geographically different locations is challenging. The cost and resources to be used to meet this challenge has to be linked to the degree of security demanded by the content. In this chapter, the security associated with the transfer of the content is quantified and treated as a quality of service parameter. The user is free to select the parameter depending up on the content being transferred. As dictated by the demanding situations, a minimum agreed security would be assured for the data at the expense of the appropriate resources over the network.