During call setup, a telecommunications service provider employs a multifaceted approach to verify the identity of both the calling and called parties, ensuring the legitimacy of the users involved…

Question

Options

• ABy analyzing the duration of the call.
• BBy tracking the location of the caller only.
• CBy monitoring the content of the call.
• DBy utilizing IMSI and IMEI information.

• A
  3% (1)
• B
  9% (3)
• C
  3% (1)
• D
  85% (28)

Explanation

According to the CHFI v11 Mobile and IoT Forensics domain, the primary mechanism used by telecommunications service providers to verify user identity during call setup is the use of IMSI (International Mobile Subscriber Identity) and IMEI (International Mobile Equipment Identity). These identifiers are fundamental to cellular network authentication and subscriber management. The IMSI uniquely identifies the subscriber and is stored on the SIM card, while the IMEI uniquely identifies the mobile device itself. During call setup, the cellular network authenticates the subscriber by validating the IMSI against the provider's Home Location Register (HLR) or Home Subscriber Server (HSS). Simultaneously, the IMEI is checked to ensure the device is legitimate and not blacklisted. CHFI v11 highlights these identifiers as critical forensic artifacts for subscriber attribution, call detail record (CDR) analysis, and location tracking.

No community discussion yet for this question.