1The company's data security team detected an intrusion attempt by a group of hackers, who were trying to breach the firewall.
2The government's decision to build a new highway through the nature reserve was seen as an intrusion into the natural habitat of several endangered species.
3The tourists felt that the presence of the paparazzi was an intrusion into their private vacation, and they asked the hotel management to intervene.
4The psychologist argued that the patient's memories of childhood trauma were an intrusion into their conscious mind, causing anxiety and distress.
5The concept of national sovereignty is often seen as a defense against the intrusion of external powers into a country's internal affairs.