Introduction
Zero Trust is a security framework based on the premise:
Never Trust, Always Verify. Traditional network security relied on perimeter defenses (firewalls), assuming anyone inside the network was safe. Zero Trust changes that.
Core Principles
A zero trust model is built on three key tenets:
1.
Explicit Verification: Always authenticate and authorize based on all available data points (identity, location, device health, service, workload).
2.
Least Privilege Access: Limit user access with Just-In-Time (JIT) and Just-Enough-Access (JEA), protecting data with risk-based adaptive policies.
3.
Assume Breach: Minimize blast radius and segment access. Use end-to-end encryption, analytics, and threat detection to continuously monitor behavior.
How to Implement ZTA
Implementing Zero Trust requires continuous work:
Define your protect surface (critical data, assets, applications, and services).
Map transaction flows across systems.
Design a custom Zero Trust architecture micro-perimeter.
Create granular security policies.
- Monitor traffic and logs continuously.
Elena is a lead security architect specializing in cloud infrastructure and zero-trust migrations.