n. 侵害者, 违反者, 侵入者

[ noun ]
someone who intrudes on the privacy or property of another without permission
<noun.person>

Trespasser \Tres"pass*er\, n.
One who commits a trespass; as:
(a) (Law) One who enters upon another's land, or violates his
rights.
(b) A transgressor of the moral law; an offender; a sinner.