QuestionQ73

Procedures and Methodology

Jackson, an experienced mobile-forensics investigator, must analyze an iPhone that may hold critical evidence in an active investigation. He faces a strict deadline and cannot interact with user data or bypass the device’s security features through ordinary methods, such as entering a passcode. Jackson must obtain essential system-level details for forensic analysis, including the device’s IMEI number, serial number, and other hardware information. He must also ensure that no user data is compromised or exposed during the analysis. Which mode should Jackson use to access the necessary information while complying with forensic standards?

  • A Safe Mode
  • B Recovery Mode
  • C DFU Mode
  • D Jailbreak Mode
Explanation

DFU Mode operates at the boot-ROM/firmware level rather than starting iOS or requiring passcode entry, enabling access to device-level firmware and hardware information while preserving protections for user data. Apple documents that, in DFU mode, the Secure Enclave locks the passcode seed to prevent access to data protected by the user’s passcode.

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