Implementing Identity Verification For Zero Trust

# Implementing Identity Verification for Zero Trust

## Prerequisites

- Understanding of zero trust principles (NIST SP 800-207)
- Familiarity with identity providers (Azure AD, Okta, Ping Identity)
- Knowledge of authentication protocols (SAML 2.0, OIDC, FIDO2)
- Understanding of MFA and passwordless authentication

## Overview

Identity is the foundational pillar of zero trust architecture. NIST SP 800-207 mandates that all resource authentication and authorization are dynamic and strictly enforced before access is allowed. Identity verification in zero trust goes beyond traditional username/password by implementing continuous, risk-adaptive authentication using multiple signals including device posture, behavioral biometrics, location, and network context.

This skill covers implementing phishing-resistant MFA, continuous identity verification, risk-based conditional access, and identity governance aligned with the CISA Zero Trust Maturity Model Identity Pillar.


## When to Use

- When deploying or configuring implementing identity verification for zero trust capabilities in your environment
- When establishing security controls aligned to compliance requirements
- When building or improving security architecture for this domain
- When conducting security assessments that require this implementation

## Prerequisites

- Familiarity with zero trust architecture concepts and tools
- Access to a test or lab environment for safe execution
- Python 3.8+ with required dependencies installed
- Appropriate authorization for any testing activities

## Architecture

### Identity Verification Flow

```
User Access Request
    │
    v
┌───────────────────────┐
│ Primary Authentication │
│ - FIDO2/WebAuthn key  │
│ - Certificate-based    │
│ - Passwordless         │
└──────────┬────────────┘
           v
┌───────────────────────┐
│ Contextual Assessment  │
│ - Device posture       │
│ - Network location     │
│ - Geo-velocity check   │