Dorothy Denning — American Public Servant born on August 12, 1945,

Dorothy Elizabeth Denning an American information security researcher who is a graduate of the University of Michigan, she has published four books and 140 articles. At Georgetown University, she was the Patricia and Patrick Callahan Family Professor of computer science and director of the Georgetown Institute of Information Assurance. She is now a professor in the Department of Defense Analysis at the Naval Postgraduate School... (wikipedia)

Cyber terrorism could also become more attractive as the real and virtual worlds become more closely coupled, with automobiles, appliances, and other devices attached to the Internet.
Further, the next generation of terrorists will grow up in a digital world, with ever more powerful and easy-to-use hacking tools at their disposal.
If we take as given that critical infrastructures are vulnerable to a cyber terrorist attack, then the question becomes whether there are actors with the capability and motivation to carry out such an operation.
While many hackers have the knowledge, skills, and tools to attack computer systems, they generally lack the motivation to cause violence or severe economic or social harm.
The concern is over what will happen as strong encryption becomes commonplace with all digital communications and stored data. Right now the use of encryption isn't all that widespread, but that state of affairs is expected to change rapidly.