The director of the Pentagon's Protecting Critical Technology Task Force is blunt in his assessment of defense contractors' efforts to protect vital U.S. weapon system data from foreign spies: "They blew it." Air Force Maj. Gen. Thomas Murphy, whose task force was created more than a year ago to advise Pentagon leaders on how to shelter top U.S. defense systems from cyberespionage, said he is well-aware of the defense industry's concerns about plans to establish new supply chain security standards,...