Cyber warfare isn't a new thing, in the current world hackers and cyber-security agents are using internet and computers as tools and platforms to attack their targets, in this case not necessary to kill or to apply any physical damage to them, instead they target their information, digital resource, and use it against their personal will. Such as stealing a company's financial details, or gaining information about a terrorist group to prevent their acts. But the cyber warfares today are solely dedicate to those use. Once the autonomous weapons have been invented and introduced to a real battlefield. The term Cyber warfare could be known in a different way.
IPVIking shows real time cyber attack
What I meant by it is that autonomous weapons will eventually become super efficient, they will do anything a human can do and even better, by that time human resources will no longer be the primary issue to technological advanced nations because their foot soldiers will be robots or drones. Human will only play the role of sending commands, no more human blood is spilled, unless you are the side that is being dominated...
The theory works fine when two forces have significant technological/material resources difference. But what happen if both sides have similar military strength?! obviously sending robots to kill robots isn't always the most efficient way of winning a battle in this case. This is cyber warfare comes in, instead of destroying physical weaponry, paralysing control system will be the most effective way. In terms autonomous weapon, I speculate that a super virus would be developed to target opponent's control system of their weapons, this way, less resources is spent to win the fight in the tough way.