Definition:
Cyberterrorism is the use of Internet based attacks in terrorist activities, including acts of deliberate, large-scale disruption of computer networks, especially of personal computers attached to the Internet, by the means of tools such as computer viruses.

Cyberterrorism Articles
The Thing to Understand about the Word Cyber

UK Spy Agencies Win Millions More to Fight Terror Threat

Report Finds that Cyberterrorists and Hackers Could Break Into Your Car’s Electronics

Cyber Attack Protection Membership Announced

West Midlands Businesses Poorly Prepared for Cyberterrorism

USA Ignores Cyberterrorism Warning by Iran

Cyber-sheriffs for the virtual Wild West

Recent Twitter hack claiming White House bombing

shows vulnerability

Cyber-terror: Should we be afraid?

CISPA falls flat but raises resonating points on cyberterrorism

Cyber terrorists are only a matter of time

Cyberterror leading threat

Anonymous group assault is not cyberterrorism

Related Cyberterrorism Websites

AUSCERT
Computer Incident Advisory Capability
Cyberwar (Austria)
FBI Counterterrorism Center
FIRST
GFIRST
Institute for Security Technology Studies
National Cyber Security Partnership
National Infrastructure Protection Center
National Security Agency
National Vulnerability Database
Terrorism Research Center

Be prepared in case of a terrorist or cyberterrorist attack:
CBS News Disaster Links
Defend America
Ready.gov
Emergency Response Handbook
Homeland Security Monitor
State of USA Cyberterrorism Preparedness
International Strategy for Cyberspace