The FBI has not provided details of how it accessed data on the phone used by San Bernardino terrorist Syed Rizwan Farook. Apple was ordered in February by the U.S. District Court for the Central District in California, Eastern Division, to help the FBI unlock by brute force the iPhone. Apple did not comment Monday on whether it would ask the FBI for information on the hack through a court or directly. Apple said last week that if a new vulnerability was found in iOS by the FBI and its partner, it will want to know what it is.”]
Source: https://www.computerworld.com/article/3048787/fbi-hack-raises-questions-about-iphone-security.html