Security researchers went to their local OfficeMax, Staples and other stores and bought a bunch of wireless keyboards. They collected keyboards from 12 different manufacturers — and eight turned out not to use any encryption at all in their wireless communications. That means outsiders could listen in on anything the users were typing, including sensitive documents or passwords. The attacker doesn’t even have to be physically within the targeted building, he said. The company has collected all the relevant information on its KeySniffer website, as well as some open source software that detects vulnerable wireless keyboards and mice.”]