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Protonuser Can someone confirm what the security/privacy benefits of private space is vs user profile?
There are no security or privacy benefits with private space compared to secondary user profiles. Secondary user profiles are the most isolated kind of profiles.
Private space is a convenience feature that offers similar security and privacy to a secondary user profile while being far more convenient to use.
For example, private space share clipboard with main profile, so apps in private space and main profile can see what is copy pasted in the other. This is one of, and in my opinion the biggest security and privacy tradeoff private space have done compared to secondary user profiles. Secondary user profiles have their own clipboard, so clipboard data cannot leak cross-profile.
But, private space is more secure and private than a work profile, while having similar convenience.
So secondary user profiles are the most secure and private, then private space, then work profiles.