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The Arrival of Zero Trust: What Does it Mean?

By Michael Loftus, Andrew Vezina, Rick Doten, Atefeh Mashatan
Communications of the ACM, February 2023, Vol. 66 No. 2, Pages 56-62
10.1145/3573129
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'Zero Trust' amid collage of text, illustration — Credit: Alicia Kubista / Andrij Borys Associates

It used to be that enterprise cybersecurity was all castle and moat. First, secure the perimeter and then, in terms of what went on inside that, "Trust, but verify."

The perimeter, of course, was the corporate network. But what does that even mean at this point? With most employees now working from home at least some of the time—often on their own smartphones or laptops—and organizations relying increasingly on cloud computing, there's no such thing as a single, enterprise-wide perimeter anymore.

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