[DangerousThing]

Is this a computer made by a TL 11 culture specifically in order to attack the computer infrastructure of a lower TL culture?

If so, then it would probably have interfaces to get into the web.

In David Weber's _Out of the Night_, the aliens attack the Earth's computer network with such a computer that sent out rather serious viruses and worms. This was after a period of analyzing our computer networks. The aliens were also smart enough to put their computer (very small) on the roof of an Iran Internet cafe so the humans took more time to realize the truth.

It basically sent out viruses that gathered information until it had enough information to attack our military networks.