Aerospace, Defense Firms Bolster Cyberdefense

Increased cyber espionage by China and recent leaks by a contractor working at the National Security Agency have put a sharp focus on cyber security for aerospace and defense companies showing off their wares at this year's Paris Airshow. "We, like others, are constantly being bombarded by people who are trying to get into our systems," said Mark DeYoung, chief executive of U.S. rocket engine and ammunition maker Alliant Techsystems (ATK).