Have in mind most image processing is done with lowered resolutions for getting more speed. So consider having a downscale parameterized as : image reduction ratio, and method (average, anti aliasing, or just use one of the pixels and discard the others)

Op I think this is an important research, if not for educational purposes, at least to provide a demo to supposedly Microsoft experts how things should be done responsibly.

If nothing else, it encourages discourse in privacy.

I disagree, I’m with OP. screenshots contain (previously) temporary information from all sorts, such as a private meeting between 2 parties with confidencial, eyes only, data. And for going towards extreme privacy end of spectrum, proving you know someone is already a red flag.

If someone has a trojan running with access to the disk, yes it’s a big deal. But it’s still worth limiting the extent of it by putting extra protection in the things such this. A hacker can have the screenshot files but won’t be able to do anything with it.