If you have not heard the news yet, Brian Krebs has reported that the recent Target breach occurred when hackers broke into the network of a company that managed the company's heating, ventilation and air conditioning (HVAC) systems. The intruders leveraged the trust and network access granted to them by Target and then from these internal systems broke into the point of sale (POS) systems and stole credit and debit card numbers, as well as other personal customer information.
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