The concept of “cyber war” goes back to the beginning of the internet, almost 50 years ago. Pulitzer-Prize-winning journalist Fred Kaplan traces the history of this topic in his new book,  Dark Territory: The Secret History of Cyber War . Kaplan recently   appeared on the Knowledge at Wharton show   on Wharton Business Radio on SiriusXM channel 111  to talk about his new book. An edited transcript of the conversation follows. Knowledge at Wharton: Ever since we’ve had the concept of the internet, the thought of cyber war has been in play. Fred Kaplan: Right. In 1967, the ARPANET was about to roll out. The ARPANET was the precursor to the internet. This was a great boon to scientific research. All the contractors of the Defense Department and labs and universities could communicate with each other on one network, instead of having to go through a zillion consoles. But there was a computer scientist named Willis Ware. He had been a computer pioneer.…