This might be Microsoft looking for pictures of naked children ?

https://www.microsoft.com/en-us/research/publication/metadat...

edit: In which case its part of the TOS and has government support. I would look for the press release statement for the change of terms of services but i dont want to search for "Child Sexual Abuse Material". Its apparently called photodna at microsoft.

If i recall apple changed theirs a few months ago.

edit: If you think i am being overly paranoid, last time i looked for the topic google put some pedophile self help sites into my results.