Carnivore

Carnivore is a system implemented by the U.S. Federal Bureau of Investigation that is analogous to wiretapping, except in this case, e-mail and other online communications are being tapped instead of telephone conversations. Carnivore is a customizable packet sniffer that can monitor all of a target user's Internet traffic. Carnivore was implemented during the Clinton administration with the approval of the U.S. Attorney General.