What is now "new," as in cyber and so on, is just the latest iteration of Sun Tzu's dictum:
故曰:知彼知己,百戰不殆;不知彼而知己,一勝一負;不知彼,不知己,每戰必殆。
Hence the saying: If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy,
for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.
What he was really saying is that you, as a commander, need a sound knowledge of your own forces ~ your weapons, your doctrine, your morale and, above all of your own logistics, and good intelligence about the enemy. In other words, good command and staff work will win battles. Cyber is just 20th century EW with a flashy new jacket ... and Turing and Knox and all the men and women at Bletchley, and Robert Watson-Watt and the Chain Home system were doing was little more than what Drake's picket ships and beacons along the South coast had done in 1588. It was, in other words, ever thus.
Technology and techno-babble often put a fancy gloss on something that is quite simple. I don't expect everyone to understand how and why radio works, but I do expect that all officers and NCOs can understand and do understand how a tactical communications system is supposed to work and everyone knows how to use it. (21st-century people like I used to be get paid to figure out what to do when the system isn't working.)
Modern computer-communication systems just allow you to do all the old fashioned things a bit quicker.
Think of NORAD and continental ballistic missile defence as Drake and Hawkins vs the Spanish Armada. The enemy can amass a devastating attacking force but good preparation (which included the raid on Cadiz in 1587 which weakened King Philipp's logistics by, amongst other things, burning all his seasoned barrel staves), a good early warning system and good weapons ~ small ships with long guns ~ and tactics can defeat it at (relatively) low cost.