The first time you run aws cli with a non-human identity, you learn who really holds the keys.
Non-human identities in AWS—service accounts, IAM roles, automation agents—run your pipelines and back-end tasks without pause or complaint. They are essential, but they also present silent risks. Misconfigured roles or over-permissioned service accounts can expose your infrastructure to unseen threats. Understanding how to manage and audit these identities through AWS CLI is the difference between a system that is secure and one that is wide open.
What Are AWS CLI Non-Human Identities
Non-human identities are entities that interact with AWS resources without direct human action. Common examples:
- IAM roles for EC2 instances
- Lambda execution roles
- Service accounts for EKS clusters
- Machine-to-machine API credentials
These identities do not log in through a console. They operate with programmatic access—through keys, tokens, or role assumptions—which makes AWS CLI one of the best tools to inspect, manage, and monitor them.
Why They Matter
Most breaches happen because of excessive permissions or leaked credentials. Non-human identities usually have broad, persistent access to critical systems. Without strong governance, these roles can become invisible attack vectors. AWS CLI commands give fine-grained visibility and control, letting you check active sessions, list attached policies, and rotate credentials without relying on the management console.
Key AWS CLI Commands for Non-Human Identities
- List Roles
aws iam list-roles
Identify all non-human IAM roles in your account. Filter by AssumeRolePolicyDocument to see who or what can assume them.
- Get Role Policies
aws iam list-attached-role-policies --role-name MyRole
aws iam get-role-policy --role-name MyRole --policy-name MyPolicy
See exactly what permissions a role holds. Hunt for * wildcards in resource or action definitions.
- Check Access Advisor
aws iam generate-service-last-accessed-details --arn arn:aws:iam::123456789012:role/MyRole
aws iam get-service-last-accessed-details --job-id JOBID
Discover when a role last accessed each AWS service. Remove permissions for unused services.
- Rotate and Clean Credentials
aws iam update-access-key --access-key-id AKIA... --status Inactive
aws iam delete-access-key --access-key-id AKIA...
Drop stale credentials quickly.
Best Practices for Securing AWS Non-Human Identities with CLI
- Enforce least privilege.
- Regularly review attached policies.
- Remove unused roles and keys.
- Use service-specific policies over generic ones.
- Track role assumption logs with CloudTrail and query them with AWS CLI.
Monitoring and Automation
Schedule CLI-based audits using CI pipelines. Export results to a repository or dashboard. This automation ensures you always know the state of every non-human identity, without logging into the AWS console.
The Bottom Line
AWS CLI gives you complete control over non-human identities. With precise commands and tight audits, you can keep automation powerful but safe.
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