When someone get access to your OpenBSD machine (which is > much more easy at your home) and do boot> boot -s , then where is you > security? ;-) >
A buildings a building and it depends on what measures are taken. At a data center who knows who should be where. At home you can remove secure from ttys asking for password on boot -s use solanoids which lock the metal case to the pc from bios setting and set the bios to prevent boot without pass or cdrom boot, lock doors, have alarms, know there shouldn't be ANYONE going in there. It could easily though unlikely be more secure aside from the cost of generators if your ups goes flat.
