Log in and enable Amazon Macie
Go to the AWS Management Console and select Amazon Macie. Open the Macie console and choose ‘Get Started’ to begin your 30-day free trial. The free trial includes 30-days of Amazon S3 bucket inventory and bucket-level security and access control assessment at no cost.
Macie continually evaluates your S3 environment
Macie generates a resource summary that includes bucket and object counts as well as details on the bucket-level security and access controls.
Start discovering sensitive data
Macie applies machine learning and pattern matching techniques to the buckets you select to identify and alert you to sensitive data, such as personally identifiable information (PII). Macie includes 1 GB of data processed for sensitive data discovery per month at no cost.