

The VPN that Mozilla (Firefox) has sold for years was rebranded Mullvad. So, as long as they’re still partnering with Mullvad for this, I think logs are impossible, as Mullvad traffic all runs through RAM and that’s been tested and proven.
EDIT: I’ve since seen somewhere else that Mozilla may not be using Mullvad for this (just to be clear for anyone reading this later).

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