Hackers accessed the system over 60,000 times as they reloaded their software daily after it was automatically deleted from registers. This action constantly tripped hundreds of alarms that were not detected by the Dallas-based retailer. The hackers named their software in such a way that it appeared to be part of the companys payment software, thereby ensuring that alerts would not stand out amongst the huge amount of data being reviewed by the firms security team. The company has downgraded the estimated number of potentially compromised payment cards to 350,000.”]