With the new GPU password bruteforcing techniques, it is easier and faster to just rent more Amazon EC2 machines. They're that fast.
Yes it's more expensive than rainbow tables (which are practically free), but not prohibitively so. Especially not for a criminal org bent on cc fraud, anyway.
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Actually, rainbow tables don't really matter anymore.
With the new GPU password bruteforcing techniques, it is easier and faster to just rent more Amazon EC2 machines. They're that fast.
Yes it's more expensive than rainbow tables (which are practically free), but not prohibitively so. Especially not for a criminal org bent on cc fraud, anyway.