What is Zero Trust Security & How does it work?

What is Zero Trust?

Zero Trust is a model that recognizes trust as a vulnerability and aims at eliminating trust from the Network while ensuring a simplified user experience. It assumes all users, devices, and endpoints are compromised and verifies all requests based on their identity and before giving any access to resources.

Zero Trust

Why is there a need for Zero Trust?

In the legacy system, security is defined by protecting organization resources from external threats. In legacy systems, a VPN or Firewall is used to create a perimeter around the organization’s network. All users/devices within the organization network, are considered as trusted users/devices, have unrestricted access to all company resources.

What is a Zero Trust Architecture?

Zero Trust model encourages micro-segmentation — it involves identifying Protect surface, a collection of networks most critical assets, data, and applications, and creating a perimeter around it. These perimeters act like a firewall for the protected surfaces and ensure that known, allowed and legitimate traffic can access the protected surface.

How does the Zero Trust security model work?

In a Zero Trust system all users, within the organization network perimeter and outside the organization network perimeter are treated as untrusted. All the users requesting resources are verified and RBA sessions are used to grant user access to resources.

Zero Trust security model

Zero Trust Pillars

The philosophy behind zero-trust assumes that no user/device can be trusted and must be verified for authentication and authorization. The 4 pillars of the zero-trust approach are:

  • Verifying user, user device.
  • Focusing on data protection and not the breach attack.
  • Least privilege access to all users
  • Real-time monitoring of traffic for Malicious activities

Challenges to Zero Trust

As Zero trust is a security methodology, it requires organizations to evaluate their security strategies and parameters for their system and make consistent efforts to evaluate and improve existing strategies. Some major challenges are:

  • The rapid increase in devices leading to increased chances of unsecured end-point.
  • The exponential growth of applications increases the need for tracking and monitoring.

Zero trust Maturity Curve

Zero trust is the Implementation of the zero tesut model that can be classified into various stages on the basis of adoption and protection.

Zero trust Maturity Curve



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