Blend of "Information" and "Warfare"
Infowar is the use of information and information systems as weapons in a conflict in which the information and information systems themselves are the targets.
Infowar has been divided into three classes:
1. Individual Privacy
2. Industrial and Economic Espionage
3. Global information warfare, i.e. Nation State versus Nation State.
Most organizations will not need to be concerned over classes I and III, but clearly Class II is relevant to any organization wishing to protect its confidential information.
Also Cyberwar and Netwar.