http://www.baltimore...0217-story.html
"In the wrong hands, this software — which does not exist today — would have the potential to unlock any iPhone in someone's physical possession," [Apple CEO Tim] Cook wrote. "The FBI may use different words to describe this tool, but make no mistake: Building a version of iOS that bypasses security in this way would undeniably create a back door. And while the government may argue that its use would be limited to this case, there is no way to guarantee such control."