Yuki Noguchi: Hello, all. Thanks for joining us today. With me is Evan Kohlmann, an expert in counterterrorism as well as technology. The Internet has become a vital networking and communications tool for the world over, including for terrorist networks. Security and privacy are also major concerns for all users of the Internet. Kohlmann knows a great deal more than I about operations of terrorist networks online, and I am grateful that he is here to field some of your questions.