The CEO of McAfee LLC is stepping down and will be replaced by Peter Leav, a former CEO of Houston-based BMC Software. Chris Young had served as CEO of Santa Clara, California-based McAfee, a security software company, since 2017. He is set to remain at McAfee to ease the transition. He also will join the company's board of managers and will become a senior adviser at TPG Capital, which owns a 51 percent stake in McAfee. “It has been a privilege to work with the McAfee team, and I am very…