this post was submitted on 20 Dec 2023
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Privacy

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Say I have Google Camera installed with network permissions revoked. Say I also install Play Services which does have network access. Would Google Camera be able to share data about my pictures to Play Services which would then phone home to Google?

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[–] cogitoprinciple 22 points 1 year ago (1 children)

I don't know if Google Camera would share the information with Sandboxed Google Play. However, something to be careful of, is if you have two apps by the same developer (Google in this case), and you have network permissions for only one of them. The developer could share those permissions with their other app. TheHatedOne did a podcast episode on this. He checked with a GrapheneOS developer beforehand, and found, that this is possible.

[–] just_another_person 7 points 1 year ago
[–] [email protected] 3 points 1 year ago* (last edited 1 year ago)

Yes. Apps can consensually trade information. So if play services is connected to the network, it can share information it receives from other apps.

The only way to isolate an app from communicating is to put it in its own profile either a work profile or a secondary user.

Simply disabling network access does not prevent the app from talking to other apps that do have network access. You need to be careful based on your threat model