@raven667 @dangoodin @matrosov Well yeah, it can be done without being visible - _by replacing the image with your sabotaged one, which shows the same image but also has the payload_. Or that's how I read it.

The point is to have a non-standard image in there first so that if it swaps in what looks like the standard image, you know _something_ has happened. You don't know what, and it doesn't stop it - it's just an alarm of sorts.