Your system is completely self-contained, so it had to be hacked from within.

Village society seemed completely self-contained, and everyone contributed something to the welfare of the community.

The universe would be completely self-contained and not affected by anything outside itself.

They were completely self-contained, but opened onto the same patio as the big house.

All being and non-being is hidden in them, completely self-contained.

They're completely self-contained and independent of any central control.

Uncharted 2 is completely self-contained, although you'll get a little bit out of a few lines or reveals if you've played the first game.

It is impossible these days for any country to remain completely self-contained.

And unlike that show, each episode offered a completely self-contained story line.

You can go and camp 10 feet from the water, completely self-contained.