2000826 - Enable application data protection for MSIX installer

Status: NEW

(Firefox :: Installer, enhancement, P3)

Description

[Simon Friedberger [:simonf]]

We want to protect user data while it is on disk. We have ongoing work to do this on macOS in bug 1932976 and it seems like something similar should be possible - or maybe even automatic - with MSIX on Windows.

I could only find indirect information, on how to share directories with other applications: https://learn.microsoft.com/en-us/windows/msix/manage/shared-package-container

The storage is described here https://learn.microsoft.com/en-us/windows/apps/design/app-settings/store-and-retrieve-app-data but it is neither clear on how this data is protected nor is it immediately obvious if this is suitable for Firefox profile data.

Comment 1

[Simon Friedberger [:simonf]]

In a discussion with Microsoft it was recently brought up that instead of an MSIX installer we could also use MSIX Sparse: https://learn.microsoft.com/en-us/windows/apps/desktop/modernize/grant-identity-to-nonpackaged-apps

Comment 2

[Simon Friedberger [:simonf]]

Amir, is this in the right component?

Comment 3

[Nick Rishel [:nrishel]]

:simonf Yes, this is the correct component.