Cybersecurity
Least Privilege in the Cloud: A Practical Starting Point
Over-permissive identities remain one of the most common cloud risks. A pragmatic path to least privilege that does not stall delivery.
Most cloud security incidents involve identities with more access than they need, long-lived credentials or misconfigured resources. Least privilege reduces the impact of any single compromise — but aiming for perfection on day one often stalls progress. Start with the changes that remove the most risk.
1. Centralise human identity
Federate cloud access through a single identity provider with multi-factor authentication. Remove individual cloud user accounts and long-lived access keys for people wherever possible.
2. Replace static keys for workloads
Use workload identity features — IAM roles, service account impersonation, managed identities and OIDC federation for CI/CD — so applications and pipelines receive short-lived credentials automatically.
3. Right-size permissions using real usage
Each provider offers tools that analyse which permissions are actually used. Use them to replace broad roles with narrower ones incrementally, starting with the most privileged identities.
4. Make privileged access temporary
Administrative access should be requested, approved and time-limited, with a clear audit trail. Standing administrator access should be the exception.
5. Monitor continuously
Centralise audit logs, alert on sensitive changes and review access regularly. Least privilege is a continuous practice, not a one-time project.