Guide Cloud security • IAM • least privilege
IAM hardening: the 7 mistakes we keep seeing.
Identity is the control plane. When IAM is weak, every other control becomes harder to trust. Use this guide to reduce blast radius, prevent privilege creep, and build monitoring that catches risky changes.
Guide
Practical IAM hardening
A checklist that translates into policy changes and detections, not a slide deck.
1. Wildcard permissions everywhere
Wildcards hide risk. Replace them with role-based policies tied to specific workflows.
- Prefer resource-scoped permissions over *.
- Split admin operations from day-to-day operations.
- Use time-bound elevation for exceptional access.
2. Shared roles and shared identities
Shared roles break accountability and make investigations slow.
- Assign roles per team/workload, not per environment.
- Require SSO for human access, and avoid shared “ops” users.
- Tag identities and resources for traceability.
3. Long-lived keys and unmanaged credentials
Long-lived access keys are a common path to persistent compromise.
- Move to short-lived tokens and workload identity.
- Rotate credentials on a schedule and on personnel change.
- Alert on new key creation and unusual key usage.
4. No break-glass design
Incidents get worse when teams scramble for access.
- Create a break-glass role with explicit, audited use.
- Require MFA and additional approvals for elevation.
- Run a quarterly drill to prove the path works.
5. Weak session policies
Session controls reduce the value of stolen credentials.
- Short session duration for privileged roles.
- Step-up authentication for sensitive actions.
- Restrict access by device posture and network where appropriate.
6. Permission changes are not monitored
Most cloud compromises include a privilege escalation or persistence step.
- Log every policy change and role assignment change.
- Detect risky diffs: wildcards added, admin roles assigned, new trust relationships.
- Alert on changes outside approved pipelines.
7. CI/CD roles are too powerful
CI systems are high-value. Treat pipelines like production identities.
- Separate build, deploy, and admin roles.
- Pin permissions to specific repos, environments, and actions.
- Use policy-as-code guardrails to prevent privilege creep.
What “good” looks like
- A least-privilege matrix mapping workflows to permissions.
- Break-glass and elevation paths that are drilled and audited.
- Monitoring that detects permission change and risky auth behavior.
- Guardrails in CI/CD that prevent repeat classes of IAM mistakes.
Need an IAM review with fix-ready output?
We produce a least-privilege matrix, a remediation roadmap, and a detection backlog. Lex is India-based and supports teams in India, the USA, Europe, and Australia.