Target, Neiman Marcus, and others are proof that its possible to attack point of sale terminals. Security is largely a game of defense. It means investing time and energy into preventing bad things from happening. Getting it right means making choices to address known, likely events. And then hoping. The alleged method of compromise through connected systems applies to all organizations. All POS systems are on networks. Anyone on these private POS networks could implant malware or make a mistake and hook these devices up to the Internet.”]