1. A method for processing cellular radio data, implemented by computer means including a security module, wherein said security module included in a terminal that is in a mobility situation: receives a current cell identifier, compares the current identifier with an identifier previously stored in memory, the security module being adapted to generate a notification for a remote server when there is a difference between the current identifier and an identifier previously stored in memory, and wherein the security module stores in memory a list of current identifiers of respective cells in which the terminal is successively located, and the sending of a notification to the server occurs only if the current identifier is absent from said list.