Non-Human Identity (NHI) Management Best Practices Checklist

2. 👤 Ownership & Accountability

Assign a human owner to every NHI

Assign a backup owner (no single-point ownership)

Capture business purpose for each NHI

Link NHI to:

• Application or service
• Team / project
• Environment (dev / staging / prod)

Flag and remediate unowned NHIs

Enable owner auto-suggestion using metadata (creator, repo, pipeline, usage)

Owner: App Owner / Engineering Manager

3. 🔐 Authentication & Credential Hygiene

Prefer short-lived credentials wherever supported:

• OIDC / OAuth tokens
• IAM roles
• SPIFFE SVIDs

Avoid or eliminate static credentials:

• Long-lived API keys
• Hard-coded secrets
• Embedded passwords

Store all secrets in approved secret managers only

Enforce credential expiry dates

Enforce automatic rotation policies

Track:

• Last rotated date
• Rotation frequency
• Expiry / TTL

Owner: Platform / Cloud Security

4. 🛂 Authorization & Least Privilege

Restrict NHI permissions to minimum required scope

Translate permissions into human-readable actions (CRUD, admin, data access)

Prohibit:

• Interactive login for service accounts
• Permanent admin privileges unless justified

Implement Just-In-Time (JIT) elevation where possible

Enforce environment isolation (no prod access from non-prod identities)

Review and remediate permission creep

Owner: Security Engineering / App Owner

5. 🔄 Lifecycle Management (Create → Use → Retire)

Define lifecycle stages for NHIs:

• Created
• Active
• Deprecated
• Retired

Automatically disable or revoke:

• Unused NHIs
• Expired credentials
• NHIs tied to retired apps or projects

Track last-used timestamps

Require review before extending lifespan

Ensure decommissioning removes:

• Access permissions
• Secrets / keys / certs
• Pipeline references

Owner: Identity Governance / IAM

6. 🧠 Contextual Guardrails (Exploit Predictability)

Apply IP range restrictions to service identities

Apply network / region constraints

Restrict usage to expected workloads or namespaces

Alert on:

• Usage outside expected IPs
• Unexpected regions
• New privilege grants

Enforce break-glass workflows for exceptional access

Owner: Security Operations

7. 🤖 AI & Agentic Identity Controls

Register every AI agent as an NHI with a human sponsor

Document:

• Agent purpose
• Tools it can invoke
• Data sets it can access

Enforce scoped OAuth tokens for agents

Require short-lived session credentials for agents

Implement Human-in-the-Loop (HITL) for high-risk actions:

• Data exports
• Privilege changes
• Cross-system writes

Log and retain agent action evidence

Owner: Data Governance / AI Platform Owner

8. 🔍 Monitoring, Detection & Risk Scoring

Integrate NHI telemetry from:

• Cloud audit logs
• Kubernetes audit logs
• SIEM
• CNAPP / CIEM
• PKI / CLM

Risk-score NHIs based on:

• Privilege level
• Exposure (public vs internal)
• Stale credentials
• Missing owner
• Anomalous usage

Prioritize remediation using a risk-based queue

Owner: Security Operations / Identity Security

9. 📋 Automated Access Reviews (Machine Certifications)

Include NHIs in formal access review campaigns

Use risk-based scoping (review what matters most)

For each NHI, reviewers validate:

• Owner
• Purpose
• Permissions
• Usage vs granted access
• Rotation posture

Define review frequency:

• Monthly (keys, certs, agents)
• Quarterly (service accounts, workloads)

Capture review decisions and evidence

Owner: Identity Governance

10. 📑 Audit & Compliance Readiness

Maintain evidence for:

• Ownership
• Reviews
• Rotation
• Decommissioning
• Exceptions

Map controls to frameworks:

• SOC 2 (CC6)
• ISO 27001 (A.5.16, A.5.17)
• NIST CSF / 800-53
• PCI DSS 4.0 (Req 8.6)

Ensure all evidence is exportable on demand

Owner: GRC / Compliance

11. 📊 Success Metrics (Track What Matters)

% NHIs with assigned owner (>90%)

% NHIs reviewed on time

Median time to adjudicate NHI reviews

Reduction in unused or over-privileged NHIs

SLA compliance for credential rotation