The volume of internet traffic generated by an ever-increasing number of applications, including e-mail, Instant Messaging (IM), web services, Voice over IP (VoIP), and other network transactions is growing unabated. Together with these applications has come an associated proliferation in the number of user identities within enterprises – e-mail addresses, IM handles, VoIP telephone numbers, all of which need to be managed. Concurrently, companies are under increasing scrutiny to adhere to government regulations and other compliance requirements to protect the privacy of customers, employees, and their personal data.