[Nodachi]

From the data files;

AS: Artificially intelligent neural-net computer that can control an entire starship without need of a crew and gain experience from its actions.

Virus: Computer virus which is beamed to an enemy ship and then destroys any Master Computers.

If the MC controls the entire ship then once it is destroyed that ship should be dead in the water, not able to move and more importantly, not able to attack.