Zero trust architecture allows businesses to prioritise access and restrictions. The main strategy is to create a zero-trust policy across all company network traffic to ensure no user, application or devices put the network at risk.
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As organisations continue to adopt cloud computing, usage of personal devices for work-related purposes, and use of IoT devices, the traditional network boundary has been dissolved. Consequently, traditional network security strategies have been rendered ineffective.
Zero trust architecture is an architecture design principle that assumes that no device or user application can be trusted. This means that everything should be treated as a potential threat.
Key aspects
Theoretically, eliminating trust in network architecture simplifies IT security, but it also introduces new complications and challenges. These challenges include:
The zero-trust model emphasizes that users should only access resources that are necessarily and not all resources (Least privilege policy). However, most system architecture does not have the capacity to understand the sensitive data and continually monitor access of segments and data flow required to enforce the least privilege policy.
The zero-trust model requires constant monitoring of devices and applications to guarantee data security. However, use of personal devices especially remote workers who demonstrate an ‘always online’ mentality, makes it difficult to enforce the zero-trust model.
It is difficult to enforce zero trust on systems that use peer to peer communication like Windows OS and wireless mesh networks. These systems communicate in a decentralised manner.
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