Need a good computer prank
 

I am in the middle of a prank war with a friend at work and I'm looking for suggestions. I need a harmless prank that is subtle but will make it mildly irritating for him to use his workstation. It can't be anything that will be easy to identify or fix and no permanent damage to hardware, of course. Ideas?

The classic Rickroll that opens two new windows every time you close one.

Mouse jiggler, key logger, and submit his email to several spam sites.

I had a few fun programs I've used in the past, One simply moves the start button around on the taskbar whenever you mouse over it. Another leaves black dots on the screen as you move the mouse around like little mouse droppings.

Set his wallpaper to something he can't change.

the little USB plugin that messes with the mouse is pretty harmless

+Stocker, if the user fails to manually logs out, it allows an attacker to gain full access over the account. Once you have access to his computer, you can send email to the boss from him at will. I just suggested the simplest and most evil things you can do.



I just became a Certified Ethical Hacker on Saturday. There's more things you could do, but they get pretty in-depth.



A mouse jiggler is anything but harmless. It's a tool used for sabotage and forensics.

Here's a more light hearted prank. http://bringvictory.com

Back in the day, I used to screenshot the desktop, then hide the icons and taskbar.