Recently I was exposed to a number of stories where alleged illegal activities (for this case, we can take brute-force) are outsourced to the cloud, and are run by the cloud providers. The providers, e.g Amazon, can be used for the sole purpose of malicious activity - For instance, renting a strong machine with a big number of processors and letting it run some sort of a brute-force, whether offline (a given file to crack) or over the internet.
A real example: (This site), owned by moxie - Supplies cloud services to crack WPA handshakes, and there is no need here to elaborate on the consequences and meaning of the availability of such service.
The question here is a bit blurred, but still important (in my opinion) - Doesn't it cross the line a bit? Of course some legitimate network administrators might use this service for their own organization and for a legit purpose, but I think there is a big window here for criminal activity.