Identity-Centric Zero Trust is a cybersecurity approach that focuses on verifying the identity of users and devices as the foundation for granting access to resources, rather than relying on traditional perimeter-based security models.
Key Concepts:
1. "Never trust, always verify"
Every access request is treated as though it originates from an untrusted network — even if it's inside the corporate perimeter.
2. Identity as the new perimeter
Traditional perimeters (like firewalls) are no longer sufficient. Instead, the user's identity (verified through strong authentication) becomes the main control point for access.
3. Continuous verification
Users and devices must be continuously authenticated and authorized — not just at login. This includes checking user roles, behavior, location, device health, etc.
4. Least privilege access
Users are granted the minimum level of access necessary, and only for the time needed (just-in-time access).
5. Microsegmentation
Access is controlled at a granular level, so even if a breach occurs, it can be contained.
Example:
In an identity-centric zero trust model, when an employee tries to access a cloud application:
- Their identity is verified via multi-factor authentication (MFA)
- Their device is checked for compliance (e.g., updated antivirus, encryption)
- Their behavior is analyzed (e.g., unusual location or time)
- Access is granted only if all conditions are met
Benefits:
- Reduces risk of insider threats
- Limits lateral movement in case of a breach
- Supports remote work and BYOD environments
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