Why identity is the new perimeter – and how to defend it

Identity has replaced network boundaries as today's security perimeter. Organizations must focus on protecting digital identities to safeguard their assets.

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• Sean Michael Kerner

In the earliest generations of the internet, a simple IP address was often enough to identify a user. In many respects, that IP address was like the physical address where people live or work.

That hasn't been true for some time now, as IP addresses, especially IPv4 addresses, are often used and reused, sometimes with hundreds or even thousands of users sitting behind a single address. IP addresses are also increasingly ephemeral and not permanent in a way that an organization can trust as a reliable way to identify a user or entity.

Users and threats are no longer relegated to a single location or device, making it even more difficult for organizations to use traditional methods of the ...