For security purposes, it should be good practice to lock your pc when you walk away. At my office, we practice harmless pranks when someone forgets, to "teach them a lesson". Usually just involves reversing/inverting displays, reversing mouse buttons, or changing the desktop background like this (because everyone is a closet bronie apparently)

Ibwish I had remembered this when the weekly theme was office pranks.

In the first or second year of high school we covered basic internet security. Stuff like don't follow suspicious urls, don't open suspicious emails and such.

Our teacher let us play around with some sort of simulated desktop environment, where we could execute some hacks like ad popups and such on each other's environment, if we fell for the trap.

Anyways, one hack I found interesting was a hack, that lockes a user out of their virual desktop, until he enters a password, that will be displayed on his environment.

Yes, a very interesting hack, because it contains two obvious yet major design flaws, which I could exploit 😈

1. It's case sensitive
In itself not a problem, but combined with #2, it's fatal.
2. "IlIlllIlI"
Depending on your font, you probably have no idea what exactly I just typed.

Let's just say, the font displayed uppercase i and lowercase L completely undifferentiable.

Guess whom I let suffer.

It was our teacher, who had to demonstrate us some things and who was connected to the same network.

I swear, nothing beats that feeling when your tearcher has go come to you and embarrassingly ask you to "unhack" them, because they can't type it 😂

So ive been seing a couple funny unattended PC pranks lests here yours!

my ultimate favourite : when someone walk of without locking his PC i go and switch his mouse to left handed. its hilarious how some ppl take for ever to figure it out.

so funny and constructive, you can gage problems solving on the fly! plus the average i now lock my pc goes up 90%