An international mobile subscriber identity (IMSI) is a unique number, usually fifteen digits, associated with Global System for Mobile Communications (GSM) and Universal Mobile Telecommunications System (UMTS) network mobile phone users. An IMSI catcher is a device, used by the NSA drone program, the police, criminals, Chinese spammers and spies all around Washington DC and the world to spoof the identity of a GSM cell tower and intercept cellular voice and data communication. They come in all sizes and flavors, from tiny or body-worn professional surveillance devices, to easy to order off the shelf solutions, to Chinese DIY (links in Chinese) and have spawned efforts to retaliate with an IMSI-catcher-catcher. IMSI-catcher technology has become increasingly widespread, with far-reaching constitutional and technical implications.
There may be some among us who can imagine 20 days in captivity; perhaps a fraction of those can imagine a full year deprived of liberty and most human contact. But 20 years? Downey and Fecteau have consistently sought to downplay their period of imprisonment; and neither has done what arguably too many former CIA officers do these days with far less justification: write a book. Downey has said that such a book would contain "500 blank pages," and Fecteau says the whole experience could be summed up by the word "boring."Extraordinary Fidelity: Two CIA Prisoners in China, 1952–73 [secure link] by Nicholas Dujmovic, a CIA historian and a veteran intelligence analyst. Time article about Downey and Fecteau from 1954.
Dr. Paul Linebarger became a spy for the U.S. Intelligence community because he was an expert in propaganda, psychological warfare, and the culture of China. In his other secret life, however, he wrote some of the most wildly inventive and unusual science fiction ever, forming a history of mankind and its Instrumentality that spanned fifteen thousand years. To protect his identity, he published under the name Cordwainer Smith.
I spy. You spy too Anything we do you do too: China big in the sky spy game
I spy again As that great American icon says in her song: oophs, I did it again. America to send another spy plane to cruise the Chinese coast. Jesse, keep your bag packed.
US Spy plane lands on Hainan after collision with Chinese jet. Bush wants the crew back. And the plane too, along with all the equipment, please.