File data analysis is a Commvault Threat Scan feature that allows you to analyze backup content for unusual file changes (which can be caused by encryption) and file corruption (which can be caused by ransomware or other threats). File data analysis utilizes several techniques for detection, including reading and previewing files, analyzing files for high levels of entropy, and analyzing SIM hash changes across multiple versions of backed up files. When suspicious files are detected, the user can view these files on the Unusual File Activity dashboard, and then mark bad or corrupted files so that clean versions of data will be recovered automatically.