Ouch, there is a reason banks usually have leases that don't give the landlord any access to their buildings. If you're hosting a system that has more than a few thousand dollars of nominally liquid assets around you really really have to start with a secure computing environment. That means locked buildingings where only you have the key, and security audits (cameras, key cards, biometrics, as much as you can get) and ideally additional insurance provided so you can charge failures on the part of the colo against their insurance up to the amount of assets you keep at risk.

What is the current ratio of exchangees that lost customer money to ones that haven't? It feels like it is close to 100%. That can be very damaging to the long term success of btc.