A few years ago, we wrote a module that would monitor checkout activity ( article) on checkouts and then apply certain business rules based on observations (ie: ban the session after x attempts of a credit card checkout).
Another fit of fraudulent activity has started, but for some reason it only affects one particular product line. The fraudster purchases the product, passes EXACT matches on the CVV/billing address, but then ships the product to a separate location. Even though our Magento Admin screens force the warehouse to double-check the order (big red warning on shipping/billing address being different), we would still get the charge-back from the credit card company because the order would still go through.
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