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The technological age has forced the U.S. to engage a new set of national security challenges. Several potential adversaries have cyberspace capabilities comparable to those of the U.S., and are constantly conducting surveillance, gathering technical information, and mapping critical nodes that could be exploited in future conflicts. How can the U.S. government best defend against future cyber attacks? Recent policy documents set out a strategy for securing all of cyberspace, which experts argue is impossible to implement, but also unnecessary. This thesis seeks to move the discussion beyond this stalemate by undertaking an analysis of the vulnerability of cyberspace to terrorist attacks. The first analysis examines the Code Red Worm and the Slammer Worm. These two worms were selected because they were highly destructive and spread faster than normal worms, making them well suited for assessing the existing security of computers and networks. The next analysis examines a staged cyber attack on critical infrastructure, entitled Attack Aurora. In the staged Aurora attack, researchers from the Department of Energy’s Idaho lab hacked into a replica of a power plant’s control system. This attack is the most recent staged attack and facilitates an analysis of vulnerabilities of critical infrastructures to cyberterrorism.

The growing ubiquity of computers and their associated networks are propelling the world into the information age. Computers may revolutionize terrorism in the same manner that they have revolutionized everyday life. Terrorism in the information age will consist of conventional terrorism, in which classic weapons (explosives, guns, etc.) will be used to destroy property and kill victims in the physical world; techno terrorism, in which classic weapons will be used to destroy infrastructure targets and cause a disruption in cyberspace; and cyberterrorism, where new weapons (malicious software, electromagnetic and microwave weapons) will operate to destroy data in cyberspace to cause a disruption in the physical world. The advent of cyberterrorism may force a shift in the definition of terrorism to include both disruption and violence in cyberspace in the same manner as physical destruction and violence. Through the use of new technology, terrorist groups may have fewer members, yet still, have a global reach. The increasing power of computers may lower the threshold of state sponsorship to a point where poor states can become sponsors and rich states are no longer necessary for terrorist groups to carry out complex attacks. This thesis explores the shift toward information warfare across the conflict spectrum and its implications for terrorism. By examining the similarities and differences with past conventional terrorism, policymakers will be able to place information age terrorism into a known framework and begin to address the problem.

The number of people connecting to the Internet is growing at an astounding rate: estimates range from 100% to 400% annually over the next five years. This unprecedented level of interconnectedness has brought with it the specter of a new threat: cyberterrorism. This thesis examines the impact of this threat on the critical infrastructure of the United States specifically focusing on Department of Defense issues and the National Information Infrastructure (NII). A working definition for cyberterrorism is derived, and a description of the Nation’s critical infrastructure is provided. A number of possible measures for countering the threat of cyberterrorism are discussed, with particular attention given to the concept of information assurance.

Information assurance demands that trustworthy systems be developed from untrustworthy components within power-generation systems, banking, transportation, emergency services, and telecommunications. The importance of vulnerability testing (or red-teaming) is emphasized as part of the concept of information assurance. To support this, a cyberterrorist ‘red team’ was formed to participate in the Marine Corps’ Urban Warrior Experiment. The objective of t his thesis is to address the impact of these issues from a Systems Management perspective. This includes taking into account the changes that must occur in order to improve the U.S.’ ability to detect, protect against, contain, neutralize, mitigate the effects of, and recover from attacks on the Nation’s Critical Infrastructure.

Usually the Internet is seen as a new medium with great potential for enhancing citizenship and democracy. This essay will try to present and to reflect on some of the less well known sides of the world wide web. In this case the ‘dark sides’ of the Internet will not refer to web sites of sex and violence, which have attracted more attention, but rather to two political movements with a high presence in the Internet: on the one hand the neoNazis in Germany and elsewhere, and on the other hand the Taliban in Afghanistan. At first glance a topic like the ‘neo-Nazis and Taliban on-line’ seems to combine very disparate societal movements that are neither new (the Nazis) nor very active in a modern environment (the Taliban). This contribution will show that both the neo-Nazis and the Taliban have important similarities in their structural approaches to society as well as in their presence in the Internet, but there are also of course serious differences. Because of this unusual comparison it will be helpful to sketch some of the context for the activities of the neo-Nazis and Taliban before we turn to the main issue.

The purpose of this paper is to explore the role of interest groups in the formation of online echo chambers and to determine whether interest groups’ use of social media contributes to political polarization.

This study used a content analysis of nearly 10,000 tweets (from 2009 to 2014) by the Brady Campaign to Prevent Gun Violence and the National Rifle Association to examine how groups engage with their political allies and opponents.

The results indicated that both groups engaged primarily with their supporters on Twitter while avoiding confrontation with their opponents. In particular, both groups used hashtags designed to reach their supporters, retweeted messages almost exclusively from other users with whom they agreed, and disproportionately used Twitter handles of their allies, while avoiding the use of Twitter handles of their opponents.

The findings suggest that interest groups’ use of social media accelerates the formation of online echo chambers, but does not lead to an increase in polarization beyond existing levels, given practices that maintain civility between opposing sides.

In this paper we use methods of social network analysis to examine the inter-organizational structure of the white supremacist movement. Treating links between Internet websites as ties of affinity, communication, or potential coordination, we investigate the structural properties of connections among white supremacist groups. White supremacism appears to be a relatively decentralized movement with multiple centers of influence, but without sharp cleavages between factions. Interorganizational links are stronger among groups with a special interest in mutual affirmation of their intellectual legitimacy (Holocaust revisionists) or cultural identity (racist skinheads) and weaker among groups that compete for members (political parties) or customers (commercial enterprises). The network is relatively isolated from both mainstream conservatives and other extremist groups. Christian Identity theology appears ineffective as a unifying creed of the movement, while Nazi sympathies are pervasive. Recruitment is facilitated by links between youth and adult organizations and by the propaganda efforts of more covertly racist groups. Links connect groups in many countries, suggesting the potential of the Internet to facilitate a whitesupremacist “cyber-community” that transcends regional and national boundaries.