I think your parent is referring to Battlestar Galactica; it had no computer networks, and therefore was not able to be effectively attacked by the Cylons.

Yep. :)

The Battlestar Galactica was the only ship in the fleet that hadn't networked its computers, because the captain was paranoid. When the Cylons (AI) attacked, they instantly hacked all the other ships, but the Galactica stayed under human control and got away.

It's fiction, but I'm honestly really impressed with this bit of writing. It's both an entirely plausible and almost realistic strategy, and it gives the writers an excuse for the crew members to interact rather than let the computer do everything. Whereas on Star Trek one wonders why they bother with a bridge crew -- the captain might as well be punching everything into a computer directly rather than inefficiently giving orders to humans.