Download ADAudit Plus Free Trial → Go to File Audit tab → Under File Audit Reports → navigate to All File/Folder Changes report
Go to File Audit tab → Under File Audit Reports → navigate to Folder Permission Changes report.
To understand what exactly was changed in the file/folder's ACL, click the More link in the Permission Modified field
Go to File Audit tab → Under File Audit Reports → navigate to Files Created report to view the files/folders created.
To view the files/folders created or deleted by a specific user, go to User Based Reports and explore the Files Created and Files Deleted reports.