bart_scriv writes "Worried about who might be spying at your company? Businessweek looks at the latest in espionage gadgets and technology in response to the recent HP boardroom scandal. The article looks at devices designed for counter-espionage, which range from mundane confidential email services to sophisticated camera and listening-device detectors. '...for every method of spying, there's a counteroffensive. One of them is the eavesdropping protection kit, manufactured by Dynasound in Norcross, Ga. To secure a room in an office building, devices are placed on ceiling plenums, floors, HVAC ducts, doors, walls or windows — basically anywhere voices can travel.'"