An abbereviated designation of the infrastructure.
It becomes the base supporting life, industry.
You may arrest him that you must live.
I include the water department, a hospital, a railroad, the internet.

Unlike hacking that to confuse it with hacking and is often used, but point at analyzing movement, the program of the network, and remodeling it,
I have malice and tamper with data, the program of the computer of another person and point to destroying it.