Question: What is the primary purpose of assigning a Lawful Interception Identifier (LIID) with alphanumeric characters for each target identity in the context of 3GPP security?
Option 1: To facilitate direct access to intercepted data for all Law Enforcement Agencies (LEAs)
Option 2: To enable real-time location tracking of targets across different networks
Option 3: To simplify the billing process for interception services rendered to LEAs
Option 4: To maintain confidentiality and limit knowledge about a specific target within authorized entities
Explanation: Assigning a unique LIID helps maintain the confidentiality of the target's identity. This indirect identification method ensures only authorized operators and handling agents at the Law Enforcement Agency have knowledge about the specific target, limiting exposure of sensitive information, crucial for security and privacy in lawful interception scenarios.