William M. MacMillan is a cybersecurity expert. Currently, he is the Senior Vice President for Security Product and Program Management at Salesforce. Prior to joining Salesforce, MacMillan was the Chief Information Security Officer at the Central Intelligence Agency. Before that, he was an officer and a combat rescue and special operations pilot in the United States Air Force. MacMillan received his B.S. in Biology from the United States Air Force Academy, an M.A. in International Relations, and an M.S. in Management of Secure Information Systems.