If you’ve followed this blog, you know that I’m obsessed with figuring out every way to interact with, abuse, and convert different types of media. Whether it’s images, video, or audio, if something can be changed or exploited, I want to figure out how to do it.
I remember reading in the past about how images could be used to pass on “secret” information or even install viruses, all the while displaying as proper images in browsers. I wanted to figure out how you could exploit an image to, at the very least, contain information not visible to the user. Let’s look at a few different methods!
Adding EXIF Data
Unbeknownst to most users sharing photos, those images have data attached to them that the photographer realizes: latitude and longitude, device, and lots of other information.