Nadia P.Validated Reviewer
Program Manager · Financial services · 201–1,000 employees
4.5
July 15, 2026
“Open source was the requirement, not a nice-to-have”
Used daily for 1–2 years
Our compliance position needed a client whose code could be independently reviewed. That eliminated most of the market immediately. Proton is open source, audited and Swiss, which made the sign-off straightforward.
Pros
Verifiable claims rather than assertions. Swiss jurisdiction genuinely matters for our risk profile.
Cons
Noticeably slower than NordVPN on transatlantic transfers.
Problems it solves
A VPN our security team could actually verify rather than trust.