NorthFirn review · Evidence grade C
Proton VPN
What Proton documents about Secure Core, NetShield, Kill Switch, split tunneling, and open-source apps, plus the performance and platform tests NorthFirn has not completed.
By NorthFirn · Published July 15, 2026 · Documentation reviewed; direct testing pending
How we checked it
This assessment uses current product documentation. Direct performance, reliability, support, and recovery testing is still open.
Commercial relationships
NorthFirn may earn commissions, referral fees, reseller margin, or implementation revenue. We disclose a relationship when it applies. Payment does not control our testing, findings, or recommendation, and we may recommend a competitor.