Nothing they fired appeared able to penetrate the enormous defensive field that surrounded the hostile intruder.

On mosaic floors, the gorgoneion usually was depicted next to the threshold, as if guarding it from hostile intruders.

There are hostile intruders on board.

Had they been hostile intruders it would have been another matter; the castle had its own ways of dealing with those.

Contact the controller on security frequency channel one-one immediately or you will be considered a hostile intruder.

The world around them is completely white, which makes the blonde Larter look more than ever like a hostile intruder from the outside world.

The last time they'd presented themselves at these gates, he'd been received as a hostile intruder.

"A hostile intruder who might wish to tamper with your program," Seven suggested.

Our security AI misidentified base personnel as hostile intruders and attacked.

The British mercenaries were eliminated as hostile intruders, which was the excuse the British wanted.