“Somebody with a wirless device in China should expect it to be compromised while he’s there,” Brenner said And those who must take phones and BlackBerries with them should remove the batteries. “The public security services in China can turn your telephone on and activate its microphone when you think it’s off,” said Brenner. China is one of a number of countries pushing active cyber-espionage programs aimed primarily at cracking U.S. national security computers and stealing corporate trade secrets. Billions have already been lost.

[1] http://cbs2chicago.com/national/china.olympics.pda.2.790453.html