There's a way to generate subsequent AMEX Card numbers once the card is deactivated[0] http://www.wired.com/2015/11/samy-kamkar-10-dollar-tool-can-guess-and-st

There's a way to generate subsequent AMEX Card numbers once the card is deactivated[0] http://www.wired.com/2015/11/samy-kamkar-10-dollar-tool-can-guess-and-steal-your-next-credit-card-number/ http://www.wired.com/2015/11/samy-kamkar-10-dollar-tool-can-...