Proton Pass is #opensource and has now passed an independent #security audit: https://proton.me/blog/pass-open-source-security-audit.

All fields and metadata in Pass are secured by #e2e encryption, so you can rest assured that no one, not even Proton, can access your information.

Proton Pass is open source and audited for security | Proton

Proton Pass’s code has been made open source and passed an audit carried out by the security experts at Cure53.

Proton
@protonmail can you have individual vaults sync to specific devices or is it an all or nothing
@breadandwater Vaults sync between all of your devices where you have Proton Pass installed.
@protonmail can I configure it not to sync personal vaults to my work laptop? (Device specific/control)
@breadandwater Hi! This is not possible at this time, however, we'll share your feedback internally so our team can consider implementing such functionality.