Identity is the only security boundary that has ever mattered in computer security defense. Physical boundaries, firewall boundaries, security domains, forests, realms and virtual networks… none of those matter if a single logon credential that can access multiple domains is compromised.

Today’s identity solutions are able to access sometimes hundreds of thousands of different security domains using a single credential, but surprisingly can do so while decreasing overall risk. How is this possible?

Identity in the early days

In the early days of computers and networking, most people used a single logon name and password to access everything. This proved to be a very bad strategy, as the compromise of one computer could lead to a compromise of every other computer sharing the same logon credentials. Everyone was told to create a different password for every different system they accessed.

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