Thanks for your request!
We consider one administrative account is enough for most forums.
If you need more than one admin, consider using moderators instead.
If you still need more than one admin, all administrators should be very trustful.
Your forum was not hacked. Another administrator changed or deleted your areas. You assigned administrative control to that member.
We will indeed add more security features.
In about 1-2 weeks we will collect data from failed login attempts. There will be a warning message for that.
Ingmar will update this topic next week.