Common IAM Pitfalls

Issue	Why it matters
Wildcard actions ("*")	Grants every permission in a service, far more than most workloads need
Wildcard resources ("*")	Applies the permission to every resource, not just the ones intended
Public principals (allUsers, Principal: "*")	Exposes the resource to anyone on the internet, not just your org
Missing AssignableScopes (Azure)	A custom role with no scope can't actually be assigned anywhere

IAM Policy Validator

IAM policies control who can access your cloud resources and what actions they are allowed to perform. A single misconfigured permission can unintentionally expose sensitive infrastructure, storage buckets, databases, or virtual machines to unauthorized users. The IAM Policy Validator helps developers, DevOps engineers, cloud administrators, and security teams quickly review AWS IAM policies, Google Cloud IAM bindings, and Azure RBAC role definitions before deploying them into production.

Instead of manually inspecting complex JSON documents, simply paste your policy into the validator. The tool automatically analyzes the configuration for syntax problems, wildcard permissions, overly broad resource access, public exposure, and common security mistakes. It then provides clear validation results along with practical recommendations to help you follow cloud security best practices.

Supported Cloud Platforms

The validator supports multiple cloud providers, allowing you to review permissions from a single interface.

• AWS IAM Policies – Validate IAM policy JSON documents, detect wildcard actions, unrestricted resources, public principals, and high-risk administrative permissions.
• Google Cloud IAM Bindings – Review IAM bindings for risky members such as allUsers or allAuthenticatedUsers, and identify roles that provide excessive access.
• Azure RBAC Role Definitions – Validate Azure custom role definitions, assignable scopes, actions, notActions, and role configuration for correctness.

Key Features

• Validate AWS IAM policy JSON instantly.
• Analyze Google Cloud IAM bindings.
• Validate Azure RBAC custom role definitions.
• Detect wildcard actions (*).
• Identify unrestricted resource access.
• Warn about public access configurations.
• Highlight administrator-level permissions.
• Check JSON formatting and structure.
• Display security warnings with explanations.
• Provide safe and risky sample policies for testing.
• Completely browser-based validation.
• No account registration required.
• Free to use.

How to Use the IAM Policy Validator

1. Select the appropriate cloud platform tab (AWS IAM, GCP IAM Binding, or Azure RBAC).
2. Paste your JSON policy into the editor.
3. Optionally load one of the provided sample policies.
4. Click the Validate Policy button.
5. Review the validation results and warnings.
6. Update your policy if necessary and validate again.

Validation Checks Performed

The validator performs several security-focused checks depending on the selected cloud platform.

AWS IAM Policy Checks

• JSON syntax validation.
• Policy version verification.
• Wildcard actions ("Action":"*").
• Wildcard resources ("Resource":"*").
• Public principals.
• Administrative permissions.
• Overly permissive statements.
• Least privilege recommendations.

Google Cloud IAM Checks

• Public members.
• Owner role assignments.
• Highly privileged predefined roles.
• Risky IAM bindings.
• General binding validation.

Azure RBAC Checks

• Role definition structure.
• Assignable scopes.
• Actions and NotActions.
• Custom role validation.
• Permission consistency.

Understanding the Results

After validation, the tool clearly indicates whether the policy appears valid or whether security concerns were found.

• Valid – The policy passes validation with no major issues detected.
• Warnings – The policy works but may contain risky permissions that should be reviewed.
• Errors – The policy contains syntax or structural issues that require correction.

Each warning includes an explanation describing why the configuration may increase security risk, helping you make informed decisions before deployment.

Common IAM Security Risks

• Using wildcard actions for every API.
• Granting access to all resources.
• Making policies publicly accessible.
• Assigning owner or administrator roles unnecessarily.
• Ignoring the principle of least privilege.
• Creating permissions that exceed application requirements.
• Using broad role assignments instead of fine-grained permissions.

Why Use This Tool?

Cloud security begins with properly configured Identity and Access Management (IAM). Even experienced engineers can accidentally create policies that grant more access than intended. This validator helps reduce those risks by automatically reviewing your policies before deployment.

Whether you're building cloud infrastructure, configuring CI/CD pipelines, managing Kubernetes workloads, securing storage services, or implementing enterprise access controls, validating IAM policies can help prevent privilege escalation, accidental public exposure, and unauthorized access to sensitive resources.

Because all validation occurs directly in your browser, you can quickly review policies during development, code reviews, security audits, or infrastructure automation workflows without installing additional software.

Who Can Benefit?

• Cloud Engineers
• DevOps Engineers
• Security Engineers
• Site Reliability Engineers (SREs)
• Cloud Architects
• Platform Engineers
• Infrastructure Teams
• Students learning cloud security
• Organizations performing IAM audits

Best Practices for IAM Policies

• Grant only the permissions your application actually requires.
• Avoid wildcard permissions whenever possible.
• Restrict resources to specific ARNs, resource IDs, or scopes.
• Review IAM policies regularly.
• Remove unused permissions.
• Use separate roles for different workloads.
• Validate policies before every deployment.
• Monitor cloud activity with audit logs.

Conclusion

The IAM Policy Validator is a fast, reliable, and easy-to-use tool for reviewing AWS IAM policies, Google Cloud IAM bindings, and Azure RBAC role definitions. By identifying risky permissions, wildcard access, public exposure, and configuration mistakes early, it helps improve cloud security while supporting IAM best practices. Whether you're managing a small cloud project or securing enterprise infrastructure, validating IAM policies before deployment is an essential step toward maintaining a secure cloud environment.

FAQ