Can you hack into a non internet connected network?

Sounds impossible, right... WRONNNG.

I saw this on a hebrew security/hacking blog by Guy Mizrahi: Zull, A Hacker's diary. This is the starting paragraph of the original news:

"The first time Scott Lunsford offered to hack into a nuclear power station, he was told it would be impossible. There was no way, the plant's owners claimed, that their critical components could be accessed from the Internet. Lunsford, a researcher for IBM's Internet Security Systems, found otherwise."

I wonder what other things we dont know about? One day we all will vanish in a click of a key|mouse|button and wont even notice. Read the rest on Forbes website.