Lawful Interception is obtaining communications network data pursuant to lawful authority for the purpose of analysis or evidence. Such data generally consist of signalling or network management information or, in fewer instances, the content of communications. If the data are not obtained in real-time, the activity is referred to as to retained data. Lawful Interception are tasks for business for many reasons such as archiving, auditing and etc. Government and intelligence agencies uses such technology for protecting and defending national security.