Going into or remaining in an area in which one does not have legal access. Note that there is no legal requirement that the individual intend to commit an offense after the intrusion into the area is complete. Consistent with the four elements of a criminal offense, the actus reus is the person’s going into a restricted area; the mens rea is the person’s knowing that he or she is not legally entitled to go into the restricted area; the attendant circumstances are that the person is not legally entitled to enter the restricted area; and the harm is that he or she is illegally entering the area.
Brenner, S. Is There Such a Thing as ‘Virtual Crime’? California Criminal Law Review. [Online, 2001.] California Criminal Law Review Website. http://www.boalt.org/ CCLR/v4/v4brenner.htm.