What is Zero Trust? Zero Trust is a security model that operates under the principle “never trust, always verify.” Unlike traditional models that trust users within the network perimeter.
Fundamental Principles 1. Explicit Verification Authenticate and authorize based on all available data points User identity, location, device, service, or workload Data classification and anomalies 2. Least Privilege Access Limit user access with Just-In-Time and Just-Enough-Access (JIT/JEA) Risk-based adaptive policies Data protection 3. Assume Breach Minimize blast radius and segment access Verify end-to-end encryption Use analytics to gain visibility and detect threats Architecture Components graph TD A[User] --> B[Identity Provider] B --> C[Policy Engine] C --> D[Access Gateway] D --> E[Protected Resources] F[Device Trust] --> C G[Network Security] --> C H[Data Classification] --> C Practical Implementation 1. Identity and Access Management (IAM) Multi-Factor Authentication (MFA) Single Sign-On (SSO) Privileged Access Management (PAM) 2. Network Segmentation Micro-segmentation Software-Defined Perimeter (SDP) Network Access Control (NAC) 3. Device Security Mobile Device Management (MDM) Endpoint Detection and Response (EDR) Device compliance policies Tools and Technologies Cloud Providers AWS: IAM, GuardDuty, Security Hub Azure: Azure AD, Conditional Access GCP: Identity-Aware Proxy, BeyondCorp Specialized Solutions Okta, Auth0 (Identity) Zscaler, Cloudflare (Network) CrowdStrike, SentinelOne (Endpoint) Implementation Challenges Technical Complexity
...