Computer Hacking Forensic Investigator (CHFI) — Question 90

Smith, as a part his forensic investigation assignment, seized a mobile device. He was asked to recover the Subscriber Identity Module (SIM card) data in the mobile device. Smith found that the SIM was protected by a Personal Identification Number (PIN) code, but he was also aware that people generally leave the PIN numbers to the defaults or use easily guessable numbers such as 1234. He made three unsuccessful attempts, which blocked the SIM card. What can Jason do in this scenario to reset the PIN and access SIM data?

Answer options

• A. He should contact the network operator for a Temporary Unlock Code (TUK)
• B. Use system and hardware tools to gain access
• C. He can attempt PIN guesses after 24 hours
• D. He should contact the network operator for Personal Unlock Number (PUK)

Correct answer: D

Explanation

The correct answer is D because contacting the network operator for a Personal Unlock Number (PUK) is the standard procedure to unlock a blocked SIM card. Options A and B are incorrect as they do not address the specific issue of a blocked SIM due to incorrect PIN entries, and option C is incorrect because guessing the PIN after 24 hours does not reset the PIN or unlock the SIM.