Target's (TGT 4.10%) data breach means that as many as 40 million consumers' credit and debit cards could be in the hands of identity thieves -- just in time for the holidays. It's a dump truck of coal for Target shoppers, but what does it mean for shareholders? In the lead story from Motley Fool Investor Beat, analysts Jason Moser and David Hanson explain what Target investors should really be worried about this holiday season and how the embattled retailer can keep a PR nightmare from impacting the bottom line.