Recent studies indicate that a significant amount of all internet traffic is generated by the use of peer-to-peer and cyberlocker sites, and most of the activity involves illegal file sharing. Opinions differ as to how to quantify the losses due to online piracy, however, there is general agreement among the copyright industries that it is a serious problem worthy of significant effort and attention. Efforts to combat online piracy have been underway since the late 1990s and some approaches have proven more successful than others. One of the more recent approaches is the so-called graduated response which involves the imposition of a gradually escalating series of consequences.