FBI Taps Hacker Tactics to Spy on Suspects
online.wsj.com
online.wsj.com
http://news.cnet.com/2100-1029-6140191.html "The FBI appears to have begun using a novel form of electronic surveillance in criminal investigations: remotely activating a mobile phone's microphone and using it to eavesdrop on nearby conversations. The technique is called a "roving bug," and was approved by top U.S. Department of Justice officials for use against members of a New York organized crime family who were wary of conventional surveillance techniques such as tailing a suspect or wiretapping him."
Another method would be to send binary OTA SMS messages to the carrier's closed simcard and turn on the mic, or camera, or ping it with type 0 sms so everytime your sim ackknowledges they can track you regardless of gps being disabled.
So, does the FBI now use National Security Letters as part of their regular law enforcement operations or does Google keep quiet about this just because this sounds bad?
More likely the source of this is some malware/virus/app that when installed, grants FBI the ability to activate the mic at will. In which case, the article would be somewhat misguided.