AIX system files, programs, and directories must be group-owned by a system group.

Restricting permissions will protect the files from unauthorized modification.

Check the group ownership of system files, programs, and directories run the following command: # ls -lLa /etc /bin /usr/bin /usr/lbin /usr/ucb /sbin /usr/sbin

If any system file, program, or directory is not group-owned by a system group, this is a finding.

Note: For this check, the system-provided "ipsec" group is also acceptable.

Change the group owner of system files to a system group by running the following command: # chgrp sys /path/to/system/file

Note: System groups other than "sys" may be used.