The only CSAM Apple will flag has to come from multiple organizations in different jurisdictions; otherwise, those hashes are ignored.
And since no credible child welfare organization is going to have CSAM that matches stuff from the worst places, there's no simple or obvious way to get them to match.
Have they actually said they would do that? I was under the impression that they just use the database of hashes provided by the American authority on prevention of child abuse.
>>And since no credible child welfare organization is going to have CSAM that matches stuff from the worst places
I'm not sure I understand what you mean, can you expand?
In [1], "That includes a rule to only flag images found in multiple child safety databases with different government affiliations — theoretically stopping one country from adding non-CSAM content to the system."
[1] https://www.theverge.com/2021/8/13/22623859/apple-icloud-pho...