In the midst of troubles with its big data breach, Target has hired Pepsi executive Brian Cornell to be its new chairman and CEO. He replaces interim CEO John Mulligan, whose regular job is Target CFO. He stepped in last May to replace Gregg Steinhafel, who had left following the huge pre-Christmas data breach at the company. Cornell was most recently CEO of PepsiCo Americas Foods. Before that he was CEO and president of Walmart's Sam's Club unit.