Microsoft is also responsible for the Orwellian (and as far as I know still secret/closed source) PhotoDNA, which is an incredible tool for censorship and surveillance.
A lot of people are dead or in jail because of that software, and not just “predators”.
How do we know that’s PhotoDNA specifically? It seems odd to single that one product out as if there aren’t many people who could use open source tools to build surveillance systems. China doesn’t have a shortage of CS majors.
It's only used to match on known child sexual abuse images. If you're someone who has collected any of these, then you deserve to be locked up in jail. No excuses.
You have no evidence that it has “only been used” that way. There is NO technical reason it is limited to CP. It can just as easily find tank man or pics of feds murdering children at Waco.
A lot of people are dead or in jail because of that software, and not just “predators”.