Privacy issues remain in the global new – via ars technica: Fake mobile phone towers discovered in London: Stingrays come to the UK – When will the Metropolitan Police stop pretending it doesn’t use them?
“Fake mobile phone masts that can be used to eavesdrop on telephone conversations without users being aware have been discovered in London by Sky News. IMSI catchers, also known as “stingrays” after a US company that makes such devices, have been widely used in the US for years. They work by sending out a signal that tricks a mobile phone into connecting with the stingray, rather than a legitimate base station, allowing information to be gathered about the device and its conversations by carrying out a man-in-the-middle (MITM) attack. It has been suspected for some time that stingrays are being used in the UK: back in 2011, The Guardian ran a story to this effect, but the Metropolitan Police refused to comment. A 2014 article in The Times gave details about what is believed to be the legal framework that regulates their use.”