📖 What is Zero Trust Model?
Zero Trust Model is a security framework based on the principle of 'never trust, always verify.' It requires strict identity verification for every person and device trying to access resources on a private network, regardless of their location or network perimeter.
"Zero Trust assumes the breach has already happened. It relies on three pillars: verify explicitly, use least privileged access, and assume breach."
📚 Certification: Microsoft Azure Fundamentals (AZ-900)
🔑 What are the Key Concepts of Zero Trust Model?
- ▸ Verify Explicitly: Always authenticate and authorize based on all available data points, including user identity, location, device health, and service or workload.
- ▸ Least Privileged Access: Limit user access using Just-In-Time and Just-Enough-Access to minimize the potential blast radius of a security breach.
- ▸ Assume Breach: Operate as if attackers are already inside the network, utilizing micro-segmentation and continuous monitoring to detect and contain threats.
- ▸ Identity as the Perimeter: Shifting security from physical network boundaries to identity-based verification for every single request to access cloud resources.
🎯 How does Zero Trust Model appear on the AZ-900 Exam?
You may be asked to identify which security principle is being applied when a company implements Just-In-Time (JIT) access to restrict administrative privileges to only when needed, reducing the attack surface.
A scenario might describe a company moving away from a 'castle-and-moat' security approach toward a model that verifies every request, requiring you to identify this as Zero Trust.
Expect questions that ask you to match the three core pillars—Verify Explicitly, Least Privileged Access, and Assume Breach—to specific organizational security actions, such as implementing multi-factor authentication.
❓ Frequently Asked Questions
How does Zero Trust differ from traditional perimeter-based security?
Traditional security relies on a 'trusted' internal network; Zero Trust removes this implicit trust, requiring strict verification for every request regardless of whether it originates inside or outside the network boundary.
Which Azure services are most critical for implementing a Zero Trust strategy?
Microsoft Entra ID provides identity verification and Conditional Access, while Azure RBAC and Privileged Identity Management (PIM) enable least privileged access and Just-In-Time administration.