The stories are false, but we have always been very open with the community, so I would like to provide some background anyways. There's some false info out there about ProtonVPN, and these stories were first fabricated by Private Internet Access, a competitor who has been feeling pressure from ProtonVPN lately. I'm one of the original researchers from CERN behind ProtonMail and ProtonVPN. Q: Is ProtonVPN done with Tesonet and is android app safe even with Tesonet certificate? When third party enter process, it is little bit harder. It could be fake news, but if yes nordvpn is shadier than I thought. I trust ProtonVPN so far even after this topic, but what is current connection with ProtonVPN and Tesonet? I trust Proton but not Tesonet - are they really behind NordVPN? Because I don't trust NordVPN and can't really find any official info, that Tesonet is behind NordVPN.
Android app was signed by mistake with Tesonet which is not possible to revoke without pulling down whole app. Proton replied that they have been sharing employes during building of protonvpn and that they shared office. Some info was revealed on Hacker News from PIA vpn cofounder that ProtonVPN is connected with Tesonet (Lithunia company - some IT, data mining startup bullshit, I don't really know them). Not trying to hurt Proton but this would be here sooner or later either way, because it was over Hacker News, some obscure webs and now Twitter.