implementing-cisa-zero-trust-maturity-model

Start with a baseline assessment of all assets across the five pillars, map current capabilities to the four maturity stages, and conduct a gap analysis. Then follow phased implementation: identity foundation, device trust, network transformation, application security, and data protection.

The five pillars are Identity, Devices, Networks, Applications and Workloads, and Data. Each progresses through Traditional, Initial, Advanced, and Optimal stages, supported by three cross-cutting capabilities: Visibility and Analytics, Automation and Orchestration, and Governance.

Each ZTMM pillar maps to specific OMB M-22-09 requirements and NIST SP 800-207 sections, such as MFA for Identity (3.1.1), EDR for Devices (3.1.2), encrypted DNS for Networks (3.1.3), application security testing (3.1.4), and data categorization (3.1.5).

Assessments fail when maturity is self-attested without telemetry evidence, pillars advance in isolation leaving lateral movement open, or SMS-based MFA is counted as phishing-resistant. Validate each Advanced or Optimal claim with queryable metrics like device posture percentages and policy-deny counts.

Advanced stage features phishing-resistant MFA, real-time device posture, microsegmentation, and automated classification. Optimal adds continuous real-time verification, passwordless authentication, AI-driven anomaly detection, fully software-defined networks, and autonomous response with self-healing infrastructure.