Worried about AWS IAM permissions that allow you to access data (like S3 objects, CodeCommit code, others) or return credentials in their response? I've updated my list of these potentially dangerous API calls and you can read about them here.
An AWS IAM Security Assessment tool that identifies violations of least privilege & creates a risk-prioritized report.
Generate Secure IAM Policies Automagically
Introduction to Policy Sentry, an easy way to create least privilege policies by copying/pasting ARNs into a YAML file.