1. A computer-implemented method for anonymizing an identifier associated with a user of a network, the method comprising the steps of: tapping traffic traversing a portion of the network to collect session data; extracting the identifier from the tapped traffic; applying a cryptographic hash function at least once to the extracted identifier to generate an anonymized subscriber identifier (ASI); inserting the ASI into the session data; and sending the session data with inserted ASI to a network intelligence solution (NIS) to enable the NIS to associate the ASI to a strictly random subscriber identifier (RSI) and store the associated ASI and RSI in a lookup table.