> Meh. Dropbox and Google Drive can run arbitrary queries over your files stored there.
However, unlike with Apple's invasive on-device scanning, you can encrypt files before storing them at Dropbox or Google Drive. There are even simple turnkey solutions like Sookasa:
"Sookasa acts as a transparent layer over Google Drive to encrypt your sensitive files on the cloud and across connected devices..." https://www.sookasa.com/GD
"Sookasa protects data both on devices and in the cloud, and decouples the data from the encryption keys, meaning your data stays secure no matter where it goes." https://www.sookasa.com/dropbox-security/
However, unlike with Apple's invasive on-device scanning, you can encrypt files before storing them at Dropbox or Google Drive. There are even simple turnkey solutions like Sookasa:
"Sookasa acts as a transparent layer over Google Drive to encrypt your sensitive files on the cloud and across connected devices..." https://www.sookasa.com/GD
"Sookasa protects data both on devices and in the cloud, and decouples the data from the encryption keys, meaning your data stays secure no matter where it goes." https://www.sookasa.com/dropbox-security/