When an iPhone dies, it still works a little. Researchers think this feature could be exploited.
disclosing a new—for now, theoretical—way that this could allow iPhones to be hacked.
It’s worth noting that iPhones technically have two low-power modes. There’s the hardware one in question now, and the iOS software low-power mode which optionally kicks in when your battery life drops below 20 percent to keep your phone running for a little longer.this special hardware low-power mode
. It only works with the Near-Field Communication , ultra wideband, and Bluetooth chips, which is why it only supports such a limited set of features. It’s basically designed so that if you rely on your iPhone as your wallet, student ID, car keys, hotel key, or the like, you won’t be stuck if you run out of juice.
What the research team in Germany have discovered is that the Bluetooth chip inside iPhones doesn’t digitally sign or even encrypt the firmware it runs. This means that if a bad actor was able to install malicious code on your iPhone, they could use the Bluetooth chip to track your phone’s location or even run new features when it was powered down.discovered a few years ago, this is a hardware issue so can’t easily be fixed with a software update or patch.
, Apple researchers reviewed the paper before it was published but declined to provide feedback. Apple also didn’t respond to Ars Technica’s request for comment.With all that said, this isn’t cause for panic. This kind of exploit is mostly used by
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