1The homeowner was startled by the intruder who had entered through an open window.
2Security cameras caught the image of the intruder who had been breaking into cars in the neighborhood.
3The company has implemented new measures to prevent intruders from accessing sensitive data.
4Intruders in the wilderness can disrupt the natural balance of the ecosystem.
5The police were called to apprehend the intruder who had been trespassing on private property.