pattern of fraudulent activity, Prior an inability to know the particular identities of some of the perpetrators of the fraud alters this result. Hinds Cty. v. Wachovia Bank N.A., 790 F. Supp. 2d 121, 123-24 (S.D.N.Y. 2011) (alteration in original) (emphasis added) (quoting U.S. a rel. Miller v. Bill Ha