Any file can be marked as Hidden; however, operating system and other control program files are marked as System files as a means of identification. The archive attribute is used for backup.

A small amount of descriptive data (metadata) that is added to a computer file by the user or network administrator. It is maintained by the file system but is not part of the file's regular set ...

U.S. food giant WK Kellogg Co. has disclosed a data breach that affected Cleo, a third-party managed file transfer system ...