Lone wolf terrorism is a growing threat throughout the world. From Anders Breivik in Norway, who murdered scores of young people in a bombing and mass-shooting attack, to Nidal Malik Hasan in the United States, who killed several of his fellow soldiers at Fort Hood, Texas, lone wolves have demonstrated that they can be as dangerous as organized terrorist groups. Who are these terrorists and how is the Internet influencing their behavior? These are key questions that need to be answered in order to understand the dynamics of lone wolf terrorism. This article will discuss the backgrounds and motivations of lone wolf terrorists, why they have proven to be so innovative and creative in their attacks, and why there have been so few female lone wolves when there have been many women in organized terrorist groups. There will also be a discussion of how the Internet has provided the perfect breeding ground for isolated individuals with terrorist tendencies, but how it may also prove to be their undoing.