Another way to inform a colleague that they have been croissant-ed!
Have you ever heard of the terms "croissantage" or "chocoblastage"?
This is a practice, usually carried out at the office by geeks who want to teach a lesson (and also enjoy a free breakfast, let's be honest) to colleagues who step away from their computer without bothering to lock their session.
Because security is important, isn't it?! What could happen if a malicious person took advantage of an open session to act under someone else's identity? To harm them directly or just to gain access to information that the first person doesn't have...
So, to raise awareness among your lax colleagues, play a prank by installing this extension on their browser(s) the next time they walk away from their workstation without securing it!
As long as it's installed, the extension will replace most images on websites with a croissant.
If people play along, they should, in principle, bring lots of pastries as soon as possible!