Disable Mounting of hfs Filesystems (Not Scored) The hfs filesystem type is a hierarchical filesystem that allows you to mount Mac OS filesystems. [enable/disable] Removing support for unneeded filesystem types reduces the local attack surface of the server. If this filesystem type is not needed, disable it. Fix: Edit or create the file /etc/modprobe.d/CIS.conf and add the following line: # install hfs /bin/true oval:org.secpod.oval:def:33843 SCAP Repo OVAL Definition 2016-04-19