Cyberwar: acts of hostility carried out on the Internet against national interests or ethnic groups.
Cyberterrorism: the politically motivated use of computers and information technology to cause severe disruption or widespread fear in society: 'a bill that would make it easier for law enforcement to wiretap computers and combat cyberterrorism.'
Identity Theft: the fraudulent acquisition and use of a person's private identifying information, usually for financial gain.
Phishing: the activity of defrauding an online account holder of financial information by posing as a legitimate company: [as adj.]'phishing exercises in which criminals create replicas of commercial Web sites.'
Source: Oxford University Press, 2005. New Oxford American Dictionary. Available through EBSCO Eric database.