Casper-fs is a custom Linux Kernel Module generator to work with resources to protect or hide a custom list of files. Each LKM has resources to protect or hide files following a custom list in the YAML rule file. Yes, not even the root has permission to see the files or make actions like edit and remove.
Link: Casper-fs is a Custom Hidden Linux Kernel Module Generator
via hakin9.org
Techie.Buzz 