Internet homicide refers to killing in which victim and perpetrator met online, in some cases having known each other previously only through the Internet. Also Internet killer is an appellation found in media reports for a person who broadcasts the crime of murder online or who murders a victim met through the Internet. The first known murder of a victim met online was in 1996. Depending on the venue used, other terms used in the media are Internet chat room killer, Craigslist killer, Facebook serial killer. Internet homicide can also be part of an Internet suicide pact or consensual homicide. Some commentators believe that reports on these homicides have overemphasized their connection to the Internet.
Online predators, participants in internet suicide and suicide-homicide pacts, and internet killers may seek out victims through internet forums, chat rooms, listservs, email, bulletin boards, social networking sites, online role playing games, online dating services, Yahoo groups, or Usenet.