A recent security audit found that IAM CloudTrail logs are insufficiently protected from tampering and...

Ensure CloudTrail log file validation is turned on

Configure an S3 lifecycle rule to periodically archive CloudTrail logs into Glacier for long-term storage

Use an S3 bucket with tight access controls that exists m a separate account

Use Amazon Inspector to monitor the file integrity of CloudTrail log files.

Request a certificate through ACM and use a generated certificate private key to encrypt CloudTrail log files

Encrypt the CloudTrail log files with server-side encryption with IAM KMS-managed keys (SSE-KMS)