Comment by Bloomy22

This has reminded me of an anecdote. I work on a corporate social network. One day a colleague from the parent company comes to us scared because instead of seeing the people photos and the attached images, he saw strange images. As in the past we had some scare with xss reflected, we immediately got scared and went straight to investigate the matter. It turned out that the colleague had a Firefox extension installed that changed his images for Nicholas Cage's faces. He didn't remember having done it, but we did remember his blunder hahaha