Yes, when iCloud Photos is on. Hiding only changes where a photo shows in the Photos app. The photo still uploads, and Apple says it is hidden on your other devices too.
Who can see a hidden photo in iCloud
You can, on every device that uses your Apple Account. So can anyone who unlocks the Hidden album on one of those devices. On an iPhone, that takes Face ID, Touch ID or the passcode.
Apple can too, with the default settings. Apple encrypts iCloud Photos in transit and on its servers, and it holds the keys in its data centers.
Advanced Data Protection changes that. Photos becomes end-to-end encrypted, and your trusted devices hold the keys. Some metadata stays under standard protection, for example whether an item is hidden or a favorite. Shared Albums are not end-to-end encrypted. Apple cannot help you recover this data, so you need a recovery contact or a recovery key before you switch it on. Who can see hidden photos on iCloud goes deeper.
Stop one iPhone from uploading
Download your originals first, and check that the phone has room for them.
- Open Settings and tap your name.
- Tap iCloud, then tap Photos under “Saved to iCloud”.
- Turn off Sync this iPhone.
- Choose Download Photos & Videos or Remove from iPhone.
Uploads, edits and deletions then stop syncing between this iPhone and your other devices. If you skip the download, the photos left on the phone are optimized versions, not originals.
The Hidden album cannot keep a photo out of iCloud
It is a place inside the Photos app, with no key of its own. It opens with your iPhone unlock method, and the upload goes on. A photo that must stay out of iCloud Photos and away from your passcode has to leave the Photos library.
Move a photo into Vault9, in this order
- If the photo is in the Hidden album, unhide it. The photo picker does not show that album.
- Import it from the Photos app into Vault9.
- Delete the original in Photos. Vault9 never deletes anything there.
- Delete it again in Recently Deleted. Apple keeps deleted photos there for 30 days.
Check one thing before step 3. With iCloud Photos on, a delete also removes the photo from your other devices. That is fine if the vault now holds the only copy you want.
Vault9 has its own backup, the iCloud backup, in your own iCloud storage. It never contains your Secret Key. Apple can see that it exists, the number of items, their padded sizes, the dates of changes and the model of the active iPhone. If you lose access to your Apple Account, you lose the backup.
Sources
- Apple Support: Hide photos with the Hidden album (checked 2026-11-06)
- Apple Support: Hide photos and videos on Apple devices (checked 2026-11-06)
- Apple Support: iCloud data security overview (checked 2026-11-06)
- Apple Support: Turn on Advanced Data Protection for iCloud (checked 2026-11-06)
- Apple Support: How to turn off iCloud Photos (checked 2026-11-06)
- Apple Support: Delete photos on your iPhone or iPad (checked 2026-11-06)
