IOS encryption isn’t as secure as it could be, researchers find

John Hopkins University security researchers have studied Android and iOS security measures, especially encryption. They found that both systems could be better (via Wired).

IOS encryption

Researchers wanted to find out how law enforcement can sometimes bypass your phone’s encryption. With iOS, the level of encryption it offers depends on the state the phone is in. These two states are referred to as Before First Unlock (BFU) and After First Unlock (AFU).

When your iPhone has been turned off and turned on, it resides in a state that Apple calls “Full Protection”. This is before unlocking it first or BFU. The security protections are high and it is difficult for third parties to extract meaningful data from the device. However, once the phone is unlocked, it enters the AFU state.

In AFU, many of the device’s encryption keys are stored in quick access memory for faster recovery. By using some vulnerabilities in iOS, a third party could grab these keys and …

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