Bill, there are a thousand ways to "cyber" the enemy.

We seriously put a dent in the Iranian nuclear program by putting a virus on little USB thumb drives and making them available to Iranian scientists and engineers. It only took one of them to plug it into a computer connected to their network.

Hell, one of the Russian surrogate groups got Podesta's email username and password by sending him an good looking email saying his account was hacked and to follow the credible looking link to change it - which involved him entering his username and password, of course. No "hacking" required, just a good old fashioned phishing attempt.

Rocket science is, well, hard as rocket science.