1Entering someone's property, territory, or system without permission; covers trespassing, military incursions, and unauthorized computer access (hacking).
何者かが夜中に工場に侵入した形跡があった。
There were signs that someone had broken into the factory in the middle of the night.
会社のサーバーへの不正侵入が発覚し、緊急対応に追われた。
An unauthorized intrusion into the company's servers was discovered, triggering an emergency response.
隣国の軍による侵入を警戒し、国境の警備が強化された。
Border security was strengthened out of concern over a possible incursion by the neighboring country's military.
害虫の侵入を防ぐため、窓に網戸を取り付けた。
I installed a screen on the window to keep insects from getting in.