Previously, we reported on the existence of stingrays, also known as `IMSI catchers’, which are used by law enforcement as mobile cellphone towers. Stingrays intercept location and other data from all cellphones in the area, redirecting the traffic from regular cellphone towers. They can be used to get cellphone data without having even to go through phone companies to get it.
Thanks to the case US v. Rigmaiden and terrific reporting from Kim Zetter on the Threat Level blog at Wired, we now have a much more comprehensive picture of how they work and what they can do. It turns out that Stingrays have been around for longer, can do much more and are much more widespread than we might have supposed, and that how much they are really used may well be unknown to the courts.