I’m not sure what you’re talking about ? You’re not sending your private key to their server without first encrypting it first locally. Their servers are not doing the E2EE, your client is. The website front and apps are open source.
Yes they could send you a compromised front if you use it via their website, that’s a compromise you accept, otherwhise you could only use their apps which are open source.
Tell me… when you visit a website that gets updated daily, if not hourly. If it served you a different version of JavaScript than what it served someone else… would you know?
I already answered that. Yes you can’t trust a website’s content, that’s why they offer apps. It’s your choice to trust the website which is as secure as they can make it, or you simply use the apps…
Last I checked the apps are mostly just wrappers around WebView, so either way you’re getting served different content randomly without ever knowing. AND, Proton specifically prevents the desktop apps from functioning on unpaid accounts. That would be like Gmail disabling IMAP for unpaid users.
