IT Glossary

What is Zero Trust Security? A Complete Guide for Indian Businesses

Zero Trust is a security model based on the principle "never trust, always verify." Unlike traditional perimeter security, Zero Trust assumes any user, device, or network could be compromised and requires continuous verification before granting access.

The traditional security model created a hard perimeter around the corporate network — inside was trusted, outside was not. With remote work, cloud applications, and mobile devices, this model fails. Zero Trust eliminates the concept of a trusted network. Every access request — even from inside the office — is verified based on identity, device health, location, and behaviour before access is granted.

Identity Verification: Multi-factor authentication (MFA) and identity governance for every user.
Device Health: Verify that devices are compliant and not compromised before granting access.
Least Privilege Access: Users get only the minimum access needed for their role.
Microsegmentation: Network divided into small segments to contain breaches.
Continuous Monitoring: Ongoing monitoring of all user and device behaviour for anomalies.

Related terms: SASE, ZTNA, MFA, IAM, Microsegmentation

Frequently Asked Questions

How do I start implementing Zero Trust in my Indian company?

Start with identity — implement MFA for all users, especially for cloud applications. Then focus on privileged access management (PAM) for admin accounts. Use a phased approach rather than trying to do everything at once.

Is Zero Trust required for CERT-In compliance?

CERT-In doesn't mandate Zero Trust specifically, but the principles align well with CERT-In requirements for access controls, monitoring, and incident detection. Organisations adopting Zero Trust will generally find CERT-In compliance easier.

Interested in Zero Trust for your organisation? Our cybersecurity advisors will design a Zero Trust roadmap tailored to your needs.