Merriam-Webster dictionary:
Cyber: Of, relating to, or involving computers or computer networks (such as the Internet)
This is what I've always understood the word to mean, and how I've always seen it used, for decades.
When I was like 12, I remember my fellow horny youths (or it could have been anyone, I guess!) in AOL chatrooms constantly asking each other "wanna ciber?"
Cybernetics is actually about feedback control systems. The original meaning has been distorted because the general public doesn't have the background to distinguish different kinds of magic. The Sperry autopilot was a cybernetic system, as were electro-mechanical gun computers.