Five Network Security Challenges and How to Navigate Them with Zero Trust White Paper © 2022 Zscaler, Inc. All rights reserved.White Paper © 2022 Zscaler, Inc. All rights reserved. White Paper 2 For the past few decades, hub-and-spoke networks have extended the corporate network to remote users and locations, including branch offices. They were built and optimized to connect back to a centralized data center, where security resided. Since everything was a part of the flat network, security was designed to place a barrier between the trusted network and the outside world (internet). This model of perimeter security using firewalls was known as castle-and-moat security. This model worked well in the past when all the users and applications were local, but enterprise needs have c

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