Dave DeWalt has resigned from his most as president of McAfee after four years, the Intel subsidiary announced Tuesday. DeWalt, who oversaw the security software firm through its $7.7 billion acquisition by Intel last year, will serve as a non-employee member of McAfee's board. He will be replaced by two new co-presidents: Michael DeCesare, currently McAfee's executive vice president for global operations, and Todd Gebhart, executive vice president and general manager of McAfee's consumer, mobile and small business division. DeCesare and Gebhart will assume their new roles by the third quarter of this year and report to Renee James, Intel's senior vice president and chairman of McAfee.