Penetration
Noun, する verb, and の adjective
しんにゅう
このコンピュータウィルスは、大晦日の夜に時計の針が12時を告げると、何千台ものパソコンに侵入をするんですよ。
This computer virus is going to penetrate thousands of computers at the stroke of midnight on the night of New Year’s Eve.
If you invade and enter that is an intrusion.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.