-.\" $OpenBSD: init.8,v 1.6 1997/03/26 01:59:37 deraadt Exp $
+.\" $OpenBSD: init.8,v 1.7 1997/04/05 22:06:10 millert Exp $
.\" $NetBSD: init.8,v 1.6 1995/03/18 14:56:31 cgd Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
and
.Pa /dev/kmem
are read-only.
-The
-.Xr settimeofday 2
-system call can only advance the time.
.It Ic 2
Highly secure mode \- same as secure mode, plus disks are always
-read-only whether mounted or not.
+read-only whether mounted or not and
+the
+.Xr settimeofday 2
+system call can only advance the time.
This level precludes tampering with filesystems by unmounting them,
but also inhibits running
.Xr newfs 8
-while the system is multi-user.
+while the system is multi-user. Because the clock cannot
+be set back in time, malicious users who have gained root
+priviledges are unable to change a file's ctime.
.El
.Pp
Normally, the system runs in level 0 mode while single user