Is an organized attempt by a country's military to disrupt or destroy the information and communications systems of another country.

Cyberwar

Explanation:

Cyberwar is the damage or disruption of a nation's networking infrastructure such as their information and communications systems by using computer technology which could be done by stealing, altering or infecting confidential or classified data of the nation.

The cyberwar is basically waged through the internet and could be done by using malicious software (worms and viruses) to infect or compromise the regular operations of a country. Any kind of systems could be cyber attacked. It could be financial, military or organizational systems. The end goal is just to cause abnormality in the system.