Velocity-based rules have long been used by merchants to help identify potentially fraudulent online behavior. Typically, velocity-based rules function by looking at commonalities in personal information, across accounts and transactions. For example, a warning may be set off if multiple accounts, or multiple orders, all have different names but the same shipping address. Another example might be if multiple accounts were all set up using the same password.

Unfortunately, these kinds of velocity checks are of limited value against more sophisticated fraudsters who have the information, the technology, and the general savvy to set up multiple accounts that all, on paper, look completely different—different names, different credit card numbers, different shipping addresses, different IP addresses. (more…)