Beth Jacob, Target’s Chief Information Officer, has resigned from her post in the wake of the largest retail breach on record. Jacob has been the CIO at Target since 2008, after being promoted to the position from VP of guest operations. Target CEO, Gregg Steinhafel, said the company was moving to overhaul its information security and compliance structure. Jacob said the decision to resign was difficult, but added that “this was a time of significant transformation for the retail industry and for Target””]