I have a question..maybe it has already been answered. From what I know of security we have hash and other collisions in Virtual Machine systems and obviously t

I have a question..maybe it has already been answered. From what I know of security we have hash and other collisions in Virtual Machine systems and obviously that can be used to gain access. with Mega using always two hosts for a a piece of data assuming that they might be using some cloud structure how would this type of attack be prevented?