PDF - http://www.fas.org/sgp/crs/terror/RL32114.pdf
"'This report provides background information for three types of attacks against computers (cyberattack, physical attack, and electromagnetic attack), and discusses related vulnerabilities for each type of attack. The report also describes the possible effects of a coordinated cyberattack, or computer network attack (CNA), against U.S. infrastructure computers, along with possible technical capabilities of international terrorists.'"
