Identifying Files by SHA-256 Hash
Because filenames can easily be changed, the appliance generates an identifier for each file using a Secure Hash Algorithm (SHA-256). If an appliance processes the same file with different names, all instances are recognized as the same SHA-256. If multiple appliances process the same file, all instances of the file have the same SHA-256 identifier.
In most reports, files are listed by their SHA-256 value (in an abbreviated format).