Periodic system security check

OpenBSD's daily(8) script runs a security check which mails any security(8) issues to root.

As part of the security(8) check, mtree(8) checks the file ownership and permissions of any files listed in /etc/mtree/special. File permissions must be at least as strict as those. Otherwise, the security(8) script run by daily(8) will flag those files and mail root about them.