You may think of corporate espionage as one company spying on a competitor to see what's in their pipeline. But more often, corporate espionage is an inside job, involving an employee leaving with trade secrets. Whatever its form,corporate espionage is a huge business. In 2008, the director of U.S. National Intelligence told Congress that intellectual property and data theft costs businesses $1 trillion every year, posing an enormous threat to America's economic power and competitiveness. Companies can no longer afford to look the other way as foreign spies, former employees and corporate rivals continue to attack some of America's most competitive industries by stealing secret information.