I remember seeing meme pages doing this on IG when they introduced the covid warnings. Sometimes, when you would screenshot the seemingly innocuous image and me

I remember seeing meme pages doing this on IG when they introduced the covid warnings. Sometimes, when you would screenshot the seemingly innocuous image and mess with it's contrast etc, you could see they hid words like "covid" or whatever in the image that could only be seen by the image scanners. I don't see anything in this image. I supposeeee, the picture of 4 teletubbies vaguely looks like the meme featured in this article: https://www.snopes.com/fact-check/biden-jerome-powell/ https://www.snopes.com/fact-check/biden-jerome-powell/ So maybe it's because of that. I have no idea how you would reverse engineer that the teletubbies would trigger the warning tho.