By David Randall NEW YORK (Reuters) – A data breach at Target Corp that exposed the credit card information of tens of millions of holiday shoppers was a major black eye for the retailer. In its wake, investors and analysts are circling companies that could benefit from a major upgrade in credit card technology. One of their favorites: Verifone Systems Inc, a $3.2 billion market cap company that is one of two major global manufacturers of point-of-sale terminals and mobile payments systems and could profit from any major upgrades of payment technology. Yet for its shares to continue to rally, Verifone must prove to analysts and portfolio managers it has taken steps to right its own ship after several years of choppy performance.