iPhone got hacked by FBI with undisclosed details
From the beginning, we objected to the FBI’s demand that Apple builds a backdoor into the iPhone because we believed it was wrong and would set a dangerous precedent. As a result of the government’s dismissal, neither of these occurred. This case should never have been brought.
We will continue to help law enforcement with their investigations, as we have done all along, and we will continue to increase the security of our products as the threats and attacks on our data become more frequent and more sophisticated.
Apple believes deeply that people in the United States and around the world deserve data protection, security and privacy. Sacrificing one for the other only puts people and countries at greater risk.
This case raised issues which deserve a national conversation about our civil liberties, and our collective security and privacy. Apple remains committed to participating in that discussion.
Most of the tech experts I’ve heard from believe the same as I do – that NAND mirroring is likely being used to some degree to brute force the pin on the device. This is where the NAND chip is typically desoldered, dumped into a file (likely by a chip reader/programmer, which is like a cd burner for chips), and then copied so that if the device begins to wipe or delay after five or ten tries, they can just re-write the original image back to the chip. This technique is kind of like cheating at Super Mario Bros. with a save-game, allowing you to play the same level over and over after you keep dying. Only instead of playing a game, they’re trying different pin combinations. It’s possible they’ve also made hardware modifications to their test devices to add a socket, allowing them to quickly switch chips out, or that they’re using hardware to simulate this chip so that they don’t have to.
By far, NAND Mirroring is the best scenario because this method would allow the FBI to try an infinite number of guesses for the passcode. It also doesn’t risk permanently destroying the phone.