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Re:iMessage with PQ3 Cryptographic Protocol by artimaeis on Wednesday February 21, 2024 @12:11PM (#39456516)
As far as I'm aware, iCloud for Messages is not enabled by default. Security-conscious users should know not to turn it on, though -- if iCloud servicing warrants is part of their threat model.

Further, Apple ended up rolling out Advanced Data Protection for iCloud in 2023, so users who truly don't want Apple holding those keys can effectively take them from Apple.

https://support.apple.com/guide/security/advanced-data-prote...

EDIT: Just confirmed with a test device and test apple id, iCloud for Messages is not enabled on it.

Re:iMessage with PQ3 Cryptographic Protocol by rekoil on Wednesday February 21, 2024 @03:08PM (#39458821)
Messages in iCloud is separate from the inclusion of the iMessage database in the regular iPhone iCloud backups. Could you check what that setting is set to on your newly setup device?
Re:iMessage with PQ3 Cryptographic Protocol by artimaeis on Wednesday February 21, 2024 @08:41PM (#39462082)
Right, that’s why I am trying to clarify that it’s iCloud for Messages that is not enabled by default.

iCloud backup IS enabled. But Messages in iCloud is off.

Re:iMessage with PQ3 Cryptographic Protocol by rekoil on Thursday February 22, 2024 @03:23AM (#39464579)
Right, and in iCloud backups you can choose to include or don't include iMessage data in those, is the iMessage data included by default?
Re:iMessage with PQ3 Cryptographic Protocol by artimaeis on Thursday February 22, 2024 @09:20AM (#39467428)
Gah, now I see. Yes, it does include messages in iCloud backup by default. The "Messages for iCloud" option is exposed at the "Apps using iCloud" menu but iMessage backups are in the iCloud Backup for the specific device.

TIL.

Re:iMessage with PQ3 Cryptographic Protocol by artimaeis on Thursday February 22, 2024 @09:29AM (#39467577)
Self-replying since I can't edit or delete this.

Sneak was right -- by default iCloud backup is enabled and is backing up all iMessage, SMS, and MMS messages.

I was just caught up on the difference between iCloud for Messages and iCloud backup of messages.

Apple support article that lays out what's backed up by default:

https://support.apple.com/en-us/108770