I don't think I've heard of any break-ins into hypervisors yet. It will eventually happen, but at the moment virtualization seems to be quite safe IMHO.

Checking for activity spikes is a good idea, another idea would be poisoned data sets, i.e. you add data that you are careful to never access. If it gets accessed, further access is prevented (or simply the decoding key changed so that the attacker still thinks he gets data, but it is unreadable) and you are alerted. This could be implemented maybe with the help of stored procedures or a separate watcher process.

In reply to Re^3: Cryptology in the database by jethro
in thread Cryptology in the database by patspam

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