This is an interesting hacker story for sure. Last year, we heard about hackers breaking into Target's (NYSE: TGT) network and stealing 40 million credit/debit card numbers. How did they manage to do so, we ask? The process began simply by stealing an HVAC contractor's system log-in informatiion. From there, the hackers were able to access Target's network. It was just a matter of sifting through until the hackers found the "good stuff:" the debit/credit card information. A Target spokeswoman confirmed this report, but would not answer specifics.