Spies are supposed to operate in the shadows, not parade before the world¡¯s media like a boy band.

If nothing else, the sight of security service heads from the U.S., U.K., Canada, Australia and New Zealand sharing a stage in California is a reminder of how radically the world has changed since the cloak-and-dagger days of the first Cold War.

The spy chiefs maintained a pitch-perfect harmony to rival BTS. Chinese industrial espionage poses an ¡°unprecedented threat¡± to innovation in the countries of the Five Eyes, Christopher Wray, director of the Federal Bureau of Investigation, told the first public summit of the intelligence-sharing alliance at Stanford University. Ken McCallum, director-general of Britain¡¯s MI5, told the BBC that China¡¯s spying was on an ¡°epic scale.¡± Mike Burgess, head of the Australian Security Intelligence Organisation, accused the Chinese government of being engaged in the ¡°most sustained, scaled and sophisticated theft of intellectual property and expertise in human history.¡±