At least Apple were just using known hashes. Have you seen what google did? https://www.eff.org/deeplinks/2022/08/googles-scans-private-photos-led-false-accusa

At least Apple were just using known hashes. Have you seen what google did? https://www.eff.org/deeplinks/2022/08/googles-scans-private-photos-led-false-accusations-child-abuse https://www.eff.org/deeplinks/2022/08/googles-scans-private-... (Not linking to NYT because paywall)