Researchers from the University of Pennsylvania have discovered a potentially major security flaw in the radios used by federal agents, as part of a new study that's sure to raise some eyebrows within the intelligence community. Computer science professor Matt Blaze and his team uncovered the vulnerability after examining a set of handheld and in-car radios used by law enforcement officials in two, undisclosed metropolitan areas. The devices, which operate on a wireless standard known as Project 25 (P25), suffer from a relatively simple design flaw, with indicators and switches that don't always make it clear whether transmissions are encrypted. An
