In a mass approach, fraudsters target as many people as possible.
That said, fraud also takes place in French, by telephone. I don't have the information on the extent of fraud and the amount of fraud reports where the initial interaction is in French. However, there are many fraudulent schemes that use the French language. This certainly demonstrates the adaptive model of fraudsters. They will adjust to their “clientele”, if I can put it that way, or their target audience, in order to maximize their profits.