“A company that supplies controversial passenger-screening machines for U.S. airports is under suspicion for possibly manipulating tests on privacy software designed to prevent the machines from producing graphic body images. The TSA sent a letter Nov. 9 to the parent company of Rapiscan, the maker of backscatter machines, requesting information about the testing of the software to determine if there was malfeasance. The company previously had problems with a ‘calculation error’ in safety tests that showed the machines were emitting radiation levels that were 10 times higher than expected.”
http://www.wired.com/threatlevel/2012/11/rapiscan-fraudulent-tests/