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Slashdot Asks: Should FBI Reveal to Apple How to Unlock Terrorist's iPhone? (latimes.com)
After reports that the FBI managed to unlock an iPhone 5c belonging to one of the San Bernardino shooters without the help of Apple, Apple is now the one that needs the FBI's assistance. "The responsible thing for the government to do is privately disclose the vulnerability to Apple so they can continue hardening security on their devices," said Justin Olsson, product counsel at security software maker AVG Technologies. However, many experts in the field believe that the government isn't legally obligated to provide the information to Apple. As mentioned in Los Angeles Times, this creates a new ethical dilemma: Should tech companies be made aware of flaws in their products, or should law enforcement be able to deploy those bugs as crime-fighting tools?
Of course they hacked the phone.
There is a very easy, very reasonable trick that is guaranteed to work to get the data out of that phone with minimal risk (assuming it has a 4-digit PIN). It's not a mistake, it's not a bug, it's not something anyone has to "discover". It's simply an attack outside the threat model that Apple used when designing that particular iPhone (and, with minor differences, all currently released iPhones). I have no doubt Apple knows full well it will work and knew it would work when they designed the phone (it's blatantly obvious, and Apple's security engineers aren't idiots) - protecting against it is just not trivial (it cannot be solved by software, it requires support hardware) so, to this date, they've chosen not to. In fact, they added a minor roadblock against it on newer phones (but only a minor one that can also be bypassed - because doing better is Hard(TM) and costs money), which demonstrates they are fully aware of it. I explained how it works here (search for "replay attack"). I'm not the first one to mention this approach.
Making iPhone secure against all physical attacks is impossible. If your PIN is bruteforceable (as is the case here), then security relies on the PIN attempt counter. An attacker with physical possession of the phone can always find a way in. Apple just has to decide how much effort (and money) they want to put into making that harder. The current bar is at approximately the "a couple experienced hardware/software hackers and a couple thousand dollars in R&D costs" level. With some more money/effort they could raise it to the "a crazy dude like Chris Tarnovsky and a medium-budget silicon hacking lab" level. It's not going to get to the "noone will practically be able to do it" level without making the iPhone into a tamper-resistant hardware security module with physical defenses (i.e. not something likely to fit in your pocket).
It still baffles me why everyone is so concerned about how the FBI got in, when we know an easy way in already.