Is it really a prank if the victim doesn’t realize there’s a prank going on?

Raymond Chen April 1, 2016 Apr 1, 2016 04/1/16

One of my friends pranked a colleague by surreptitiously putting a program in the Startup group. This program opened a network socket and awaited further instructions. Things you could tell the program to do: Create a thread and put it into a 100% CPU loop. Allocate a megabyte of memory (hey, that was a lot back in the day) and go into a...