B1
a program that is secretly put onto a computer in order to destroy the information that is stored on it
Dictionary examples:
My computer caught a virus and now it only speaks in emoji. (0.0)
My computer got a virus and now it only shows cat videos. (0.0)
The virus turned my laptop into a very expensive paperweight. (0.0)
My computer has been acting strangely, and I suspect it's a virus. (45.3)