Solutions (including inter alia, systems, methods and software) for dealing with online fraud. Certain of these solutions provide enhanced responses to an identified instance of online fraud. Such enhanced responses can incorporate one or more of a variety of strategies for defeating an attempt by a server to filter and/or otherwise avoid responses to its fraudulent activity. Merely by way of example, responses may be disguised (e.g., by transmitting the responses from a variety of computers, by transmitting responses that appear to originate from a computer different than the actual source of the responses, etc.). In some cases, a response strategy may be implemented that forces the server (and/or an operator thereof) to choose between accepting the responses and blocking potential responses from the targets of the fraudulent scheme.