A spokesman for Fishman declined to further elaborate on the case because the investigation is ongoing.
Fifteen people have been arrested, including a ringleader who was apprehended at John F. Kennedy Airport preparing to board a flight to Pakistan.
One of the defendants pleaded guilty to one count of wire fraud and one count of aggravated identity theft last month. Verlina Adams admitted in federal court in San Jose, Calif., that she tried to defraud a credit card processing company by creating fake businesses.
Doug Johnson, vice president of risk management at the American Bankers Association said the industry is working to crack down on electronic fraud, much like they did with check and debit card fraud.
‘‘We’re going to see the same thing in the electronic environment,’’ Johnson said. ‘‘Over time we’re going to get smarter about how to prevent these losses.’’