Adopt Zero Trust: never trust, always verify. Standardize AuthN/AuthZ, manage secrets centrally, encrypt everywhere, and automate security in CI/CD.
1. The Zero Trust Architecture (ZTA)
Definition: No implicit trust—grant access only after explicit verification of identity and context.
A. Core ZTA Principles
- Verify Explicitly: Authenticate and authorize every request using identity, device health, location, and service context.
- Least Privilege Access (LPA): Minimal, time-bound permissions (Just-in-Time) for users and services.
- Assume Breach: Design for containment with micro-segmentation and comprehensive logging.
2. Authentication and Authorization Standards
A. OAuth 2.0 (Authorization)
- Purpose: Grant limited access without exposing credentials.
- Key Flows: Authorization Code (web/mobile); Client Credentials (service-to-service).
B. OpenID Connect (OIDC) (Authentication)
- Purpose: Identity layer on OAuth 2.0; returns ID Token (JWT) with user claims.
C. Security Best Practices
- JWT Validation: Verify signature, expiration, audience for all tokens.
- Token Lifetime: Short-lived access tokens (5–60 min); secure refresh tokens for renewal.
3. Secret Management
A. Dedicated Secret Management Systems
- Tools: HashiCorp Vault, AWS Secrets Manager, Azure Key Vault.
- Mechanism: Store encrypted centrally; services fetch secrets at runtime using verified identities.
- Leasing & Rotation: Time-bound leases and automatic rotation minimize exposure.
B. Defense-in-Depth for Data Protection
- Encryption at Rest: Databases, files, backups encrypted on disk.
- Encryption in Transit: TLS for external and internal traffic; service mesh enforces mTLS.
4. Security Automation (DevSecOps)
- SAST: Static code analysis to catch common vulnerabilities early.
- DAST: Simulated attacks against running apps to find runtime flaws.
- Dependency Scanning: Monitor libraries for known CVEs; keep SBOMs updated.
Security Coverage Heatmap
Score (1–5) across ZTA Principles, AuthN/AuthZ, Secrets, and DevSecOps automation maturity.