In an in-depth investigation of a problem that is too often trivialized by lawmakers and the media, Citron exposes the startling extent of personal cyber-attacks and proposes practical, lawful ways to prevent and punish online harassment. She reveals the serious emotional, professional, and financial harms incurred by victims. Persistent online attacks disproportionately target women and frequently include detailed fantasies of rape as well as reputation-ruining lies and sexually explicit photographs.