Target (NYSE:TGT) admits that the number of customers affected by the recent data breach may be closer to 70 million. Moreover, the recent troubles are starting to affect sales. Meanwhile, Sears (NASDAQOTH:SHLDQ) continues to struggle, while Macy's (NYSE:M) proves it's one of the best in the business at managing its inventory.

In this segment from Investor Beat, Motley Fool analyst Ron Gross analyzes the retail industry and what it means for investors.